How to find your Bitcoin wallet Number?

If anyone knows how i can buy it i would appreciate it.Mark

Yes bitcoin is completely fungible. The smallest possible unit of bitcoin, nicknamed "a satoshi" is 0.00000001 bitcoins. It doesn't really matter if you buy in bulk or in fractions its digital so you can chop it up any way you like. I actually buy 0.1 to 0.15 bitcoin per month that's about 50-60 dollars at the current market price. Its not a lot of money so I don't miss it.
If you're in the US I think the best places to buy would be somewhere like coinbase. You can set up an account and dive right in (although I'd advise leaving your bitcoin in an online account, definitely look into "cold storage" options like paper wallets). There is Bitstamp I think they are US based. Bitbargain that's the one I use here in the UK. Just search for "bitcoin exchange".

Bitcoins are an electronic currency.

You can download a bitcoin wallet at bitcoin.org.

Your wallet will contain an address. Which is usually a string of random characters and numbers.

Example.
1HVRHvAxxaz8sSnGcGFRTnRHpVTLPoECEQ

This address is where you receive bitcoins and send bitcoins from.

Only 21, 000, 000 bitcoins will ever exist. The last bitcoins will be created around the year 2100.

A bitcoin is technically 1, 000, 000, 000 sotashi, which is the smallest bitcoin increment.

Bitcoins can be transferred anywhere around the world in around 15-60 minutes. It costs nothing to send money and transactions can be as anonymous as you would like.

Bitcoins are exceedingly difficult to tax because the government cannot determine who has what amount of bitcoin.

China has recently been showing increasing interest in this currency. They now rival the US for purchases of bitcoin.

Bitcoin was created around 6 years ago by a man named "Shotashi Nokamoro". This is not his real name and nobody really knows who he is.

Bitcoin around their inception were being traded for less than one penny a piece. After two years it skyrocketed to $32. Then shot down to $3.50 about a month later. Now they are worth $215 in 6 years.

There is a lot more to it, but I wanted to make it as simple as possible.

There simply isn't enough time to go into all the whys… In April, Bitcoin blew up. It was about that time that you had several companies announce new mining hardware like ASICs that were designed for the specific purpose of mining. Since that time, it seems that there is a race to own the most hardware. Move forward to present day and we have several companies producing the hardware, and even several companies buying datacenter's worth. All this new mining hardware has introduced a HUGE amount of processing power.

With the added computational power, the bitcoin block difficulty has gone up exponentially. (see my attached image)..