57261316656 has 20 divisors (see below), whose sum is σ = 147925068152. Its totient is φ = 19087105536.

The previous prime is 57261316627. The next prime is 57261316663. The reversal of 57261316656 is 65661316275.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 1192944097 = 57261316656 / (5 + 7 + 2 + 6 + 1 + 3 + 1 + 6 + 6 + 5 + 6).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 596472001 + ... + 596472096.

Almost surely, 2^57261316656 is an apocalyptic number.

It is an amenable number.

57261316656 is an abundant number, since it is smaller than the sum of its proper divisors (90663751496).

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

57261316656 is a wasteful number, since it uses less digits than its factorization.

57261316656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1192944108 (or 1192944102 counting only the distinct ones).

The product of its digits is 1360800, while the sum is 48.

The spelling of 57261316656 in words is "fifty-seven billion, two hundred sixty-one million, three hundred sixteen thousand, six hundred fifty-six".