57537642457 has 2 divisors, whose sum is σ = 57537642458. Its totient is φ = 57537642456.

The previous prime is 57537642419. The next prime is 57537642479. The reversal of 57537642457 is 75424673575.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56423351296 + 1114291161 = 237536^2 + 33381^2 .

It is a cyclic number.

It is not a de Polignac number, because 57537642457 - 2¹¹ = 57537640409 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 57537642398 and 57537642407.

It is not a weakly prime, because it can be changed into another prime (57537642157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28768821228 + 28768821229.

It is an arithmetic number, because the mean of its divisors is an integer number (28768821229).

Almost surely, 2^57537642457 is an apocalyptic number.

It is an amenable number.

57537642457 is a deficient number, since it is larger than the sum of its proper divisors (1).

57537642457 is an equidigital number, since it uses as much as digits as its factorization.

57537642457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24696000, while the sum is 55.

The spelling of 57537642457 in words is "fifty-seven billion, five hundred thirty-seven million, six hundred forty-two thousand, four hundred fifty-seven".