The satoshi is the smallest unit of the bitcoin crypto. It is named after Satoshi Nakamoto, the pseudonymous creator of the protocol used in blockchains and the bitcoin crypto.
A satoshi represents one hundred millionths of a bitcoin. Because bitcoin’s value has skyrocketed, smaller denominations are required for smaller transactions. Smaller denominations make bitcoin transactions more convenient while also making them more readable.
As defined by the Bitcoin protocol, a single Bitcoin can’t be divided further than 1 Satoshi.