57731144369 has 2 divisors, whose sum is σ = 57731144370. Its totient is φ = 57731144368.

The previous prime is 57731144297. The next prime is 57731144447. The reversal of 57731144369 is 96344113775.

57731144369 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32509893025 + 25221251344 = 180305^2 + 158812^2 .

It is a cyclic number.

It is not a de Polignac number, because 57731144369 - 2⁸ = 57731144113 is a prime.

It is a super-2 number, since 2×57731144369² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (57731143369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28865572184 + 28865572185.

It is an arithmetic number, because the mean of its divisors is an integer number (28865572185).

Almost surely, 2^57731144369 is an apocalyptic number.

It is an amenable number.

57731144369 is a deficient number, since it is larger than the sum of its proper divisors (1).

57731144369 is an equidigital number, since it uses as much as digits as its factorization.

57731144369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1905120, while the sum is 50.

The spelling of 57731144369 in words is "fifty-seven billion, seven hundred thirty-one million, one hundred forty-four thousand, three hundred sixty-nine".