57166022731 has 4 divisors (see below), whose sum is σ = 57166529464. Its totient is φ = 57165516000.

The previous prime is 57166022699. The next prime is 57166022747. The reversal of 57166022731 is 13722066175.

57166022731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 57166022731 - 2⁵ = 57166022699 is a prime.

It is a super-2 number, since 2×57166022731² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57166022131) 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, 931 + ... + 338131.

It is an arithmetic number, because the mean of its divisors is an integer number (14291632366).

Almost surely, 2^57166022731 is an apocalyptic number.

57166022731 is a deficient number, since it is larger than the sum of its proper divisors (506733).

57166022731 is a wasteful number, since it uses less digits than its factorization.

57166022731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506732.

The product of its (nonzero) digits is 105840, while the sum is 40.

The spelling of 57166022731 in words is "fifty-seven billion, one hundred sixty-six million, twenty-two thousand, seven hundred thirty-one".