Unique identifier for this user or bot. This number may have more than 32 significant bits and some programming languages may have difficulty/silent defects in interpreting it. But it has at most 52 significant bits, so a 64-bit integer or double-precision float type are safe for storing this identifier.
elbekD
commented
2 years ago
According to https://core.telegram.org/bots/api#user, 32-bit Int is not enough.