57621086931 has 8 divisors (see below), whose sum is σ = 78462756864. Its totient is φ = 37596737480.

The previous prime is 57621086879. The next prime is 57621086933. The reversal of 57621086931 is 13968012675.

57621086931 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 57621086931 - 2¹⁸ = 57620824787 is a prime.

It is a super-2 number, since 2×57621086931² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (57621086933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204329955 + ... + 204330236.

It is an arithmetic number, because the mean of its divisors is an integer number (9807844608).

Almost surely, 2^57621086931 is an apocalyptic number.

57621086931 is a deficient number, since it is larger than the sum of its proper divisors (20841669933).

57621086931 is a wasteful number, since it uses less digits than its factorization.

57621086931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408660241.

The product of its (nonzero) digits is 544320, while the sum is 48.

The spelling of 57621086931 in words is "fifty-seven billion, six hundred twenty-one million, eighty-six thousand, nine hundred thirty-one".