57171665731 has 16 divisors (see below), whose sum is σ = 60288883200. Its totient is φ = 54108332608.

The previous prime is 57171665723. The next prime is 57171665767. The reversal of 57171665731 is 13756617175.

It is a cyclic number.

It is not a de Polignac number, because 57171665731 - 2³ = 57171665723 is a prime.

It is a super-2 number, since 2×57171665731² (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 (57171660731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2050935 + ... + 2078623.

It is an arithmetic number, because the mean of its divisors is an integer number (3768055200).

Almost surely, 2^57171665731 is an apocalyptic number.

57171665731 is a deficient number, since it is larger than the sum of its proper divisors (3117217469).

57171665731 is a wasteful number, since it uses less digits than its factorization.

57171665731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28658.

The product of its digits is 926100, while the sum is 49.

The spelling of 57171665731 in words is "fifty-seven billion, one hundred seventy-one million, six hundred sixty-five thousand, seven hundred thirty-one".