57156118927920 has 480 divisors, whose sum is σ = 210873153254400. Its totient is φ = 13809254823936.

The previous prime is 57156118927879. The next prime is 57156118927927. The reversal of 57156118927920 is 2972981165175.

57156118927920 is a `hidden beast` number, since 5 + 7 + 1 + 5 + 611 + 8 + 9 + 2 + 7 + 9 + 2 + 0 = 666.

It is not an unprimeable number, because it can be changed into a prime (57156118927927) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2412962317 + ... + 2412986003.

It is an arithmetic number, because the mean of its divisors is an integer number (439319069280).

Almost surely, 2^{57156118927920} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57156118927920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105436576627200).

57156118927920 is an abundant number, since it is smaller than the sum of its proper divisors (153717034326480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57156118927920 is a wasteful number, since it uses less digits than its factorization.

57156118927920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31417 (or 31408 counting only the distinct ones).

The product of its (nonzero) digits is 19051200, while the sum is 63.

The spelling of 57156118927920 in words is "fifty-seven trillion, one hundred fifty-six billion, one hundred eighteen million, nine hundred twenty-seven thousand, nine hundred twenty".