long long int

"long long int" is a data type in C and other programming languages that represents an integer value that can hold a larger range of values than a regular "int". It typically uses 64 bits of memory, allowing it to store values from -9,223,372,036,854,775,808 to 9,223,372,036,854,775,807. This data type is useful for storing very large numbers or for performing calculations that may result in overflow with regular "int" data types.