57516112121979 has 12 divisors (see below), whose sum is σ = 89208663699624. Its totient is φ = 32866349783904.

The previous prime is 57516112121873. The next prime is 57516112121981. The reversal of 57516112121979 is 97912121161575.

It is not a de Polignac number, because 57516112121979 - 2⁸ = 57516112121723 is a prime.

It is not an unprimeable number, because it can be changed into a prime (57516112121179) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 195633034282 + ... + 195633034575.

It is an arithmetic number, because the mean of its divisors is an integer number (7434055308302).

Almost surely, 2^{57516112121979} is an apocalyptic number.

57516112121979 is a deficient number, since it is larger than the sum of its proper divisors (31692551577645).

57516112121979 is a wasteful number, since it uses less digits than its factorization.

57516112121979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391266068874 (or 391266068867 counting only the distinct ones).

The product of its digits is 2381400, while the sum is 57.

The spelling of 57516112121979 in words is "fifty-seven trillion, five hundred sixteen billion, one hundred twelve million, one hundred twenty-one thousand, nine hundred seventy-nine".