57731788813 has 2 divisors, whose sum is σ = 57731788814. Its totient is φ = 57731788812.

The previous prime is 57731788799. The next prime is 57731788837. The reversal of 57731788813 is 31888713775.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57401930569 + 329858244 = 239587^2 + 18162^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57731788813 is a prime.

It is a super-4 number, since 4×57731788813⁴ (a number of 44 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57731786813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28865894406 + 28865894407.

It is an arithmetic number, because the mean of its divisors is an integer number (28865894407).

Almost surely, 2^57731788813 is an apocalyptic number.

It is an amenable number.

57731788813 is a deficient number, since it is larger than the sum of its proper divisors (1).

57731788813 is an equidigital number, since it uses as much as digits as its factorization.

57731788813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7902720, while the sum is 58.

The spelling of 57731788813 in words is "fifty-seven billion, seven hundred thirty-one million, seven hundred eighty-eight thousand, eight hundred thirteen".