57747311731 has 2 divisors, whose sum is σ = 57747311732. Its totient is φ = 57747311730.

The previous prime is 57747311723. The next prime is 57747311773. The reversal of 57747311731 is 13711374775.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57747311731 - 2³ = 57747311723 is a prime.

It is a super-2 number, since 2×57747311731² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (57747311431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28873655865 + 28873655866.

It is an arithmetic number, because the mean of its divisors is an integer number (28873655866).

Almost surely, 2^57747311731 is an apocalyptic number.

57747311731 is a deficient number, since it is larger than the sum of its proper divisors (1).

57747311731 is an equidigital number, since it uses as much as digits as its factorization.

57747311731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432180, while the sum is 46.

The spelling of 57747311731 in words is "fifty-seven billion, seven hundred forty-seven million, three hundred eleven thousand, seven hundred thirty-one".