The reference bitcoin client is actually implemented with 64-bit integers, with a bitcoin defined as starting 8 decimal places to the left. But your point stan

The reference bitcoin client is actually implemented with 64-bit integers, with a bitcoin defined as starting 8 decimal places to the left. But your point stands, which is that bitcoins are highly divisible. In fact, a "satoshi" is the unit name for one hundredth-millionth of a bitcoin.