1311255515056 has 20 divisors (see below), whose sum is σ = 2576340063504. Its totient is φ = 646393563200.

The previous prime is 1311255515051. The next prime is 1311255515057. The reversal of 1311255515056 is 6505155521131.

It is not an unprimeable number, because it can be changed into a prime (1311255515051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 577135975 + ... + 577138246.

Almost surely, 2^{1311255515056} is an apocalyptic number.

1311255515056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1311255515056 is a deficient number, since it is larger than the sum of its proper divisors (1265084548448).

1311255515056 is a wasteful number, since it uses less digits than its factorization.

1311255515056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1154274300 (or 1154274294 counting only the distinct ones).

The product of its (nonzero) digits is 112500, while the sum is 40.

The spelling of 1311255515056 in words is "one trillion, three hundred eleven billion, two hundred fifty-five million, five hundred fifteen thousand, fifty-six".