57611538931 has 2 divisors, whose sum is σ = 57611538932. Its totient is φ = 57611538930.

The previous prime is 57611538913. The next prime is 57611538947. The reversal of 57611538931 is 13983511675.

It is a happy number.

Together with previous prime (57611538913) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 57611538931 - 2⁹ = 57611538419 is a prime.

It is a super-2 number, since 2×57611538931² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (57611538911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28805769465 + 28805769466.

It is an arithmetic number, because the mean of its divisors is an integer number (28805769466).

Almost surely, 2^57611538931 is an apocalyptic number.

57611538931 is a deficient number, since it is larger than the sum of its proper divisors (1).

57611538931 is an equidigital number, since it uses as much as digits as its factorization.

57611538931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 680400, while the sum is 49.

The spelling of 57611538931 in words is "fifty-seven billion, six hundred eleven million, five hundred thirty-eight thousand, nine hundred thirty-one".