The smallest unit of Bitcoin is called a "Satoshi" and is equal to 0.00000001 BTC. This unit is named after Satoshi Nakamoto, the pseudonymous creator(s) of Bitcoin. There are 100 million Satoshis in 1 Bitcoin. The term "Satoshi" allows pricing and accounting to be represented in smaller subdivisions than whole Bitcoins, similar to how dollars are divided into cents.