A satoshi is the smallest unit of bitcoin. One bitcoin is equal to 100,000,000 satoshis.
This is a simple question, but it has no easy answer. The answer to this question depends on the type of bitcoin you are talking about.
The most popular bitcoin is the Bitcoin Core, which has a unit called satoshi. One Bitcoin Core (BTC) is equal to 100 million satoshis. However, there are other types of bitcoins that have different units for their units like millisatoshi and microsatoshi.
There are two ways to think about how many satoshis in a bitcoin. The first way is to think about how many decimal places there are in a bitcoin. The answer is eight decimal places (1 million). The second way is to think about how many bitcoins there are in one unit of currency. The answer is 100 million units of currency (1 billion).