57168608731 has 4 divisors (see below), whose sum is σ = 61566194032. Its totient is φ = 52771023432.

The previous prime is 57168608579. The next prime is 57168608737. The reversal of 57168608731 is 13780686175.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 57168608731 - 2³¹ = 55021125083 is a prime.

It is a super-2 number, since 2×57168608731² (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 (57168608737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2198792631 + ... + 2198792656.

It is an arithmetic number, because the mean of its divisors is an integer number (15391548508).

Almost surely, 2^57168608731 is an apocalyptic number.

57168608731 is a deficient number, since it is larger than the sum of its proper divisors (4397585301).

57168608731 is a wasteful number, since it uses less digits than its factorization.

57168608731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4397585300.

The product of its (nonzero) digits is 1693440, while the sum is 52.

The spelling of 57168608731 in words is "fifty-seven billion, one hundred sixty-eight million, six hundred eight thousand, seven hundred thirty-one".