57043697939 has 2 divisors, whose sum is σ = 57043697940. Its totient is φ = 57043697938.

The previous prime is 57043697923. The next prime is 57043697941. The reversal of 57043697939 is 93979634075.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 57043697939 - 2⁴ = 57043697923 is a prime.

Together with 57043697941, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (57043697539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28521848969 + 28521848970.

It is an arithmetic number, because the mean of its divisors is an integer number (28521848970).

Almost surely, 2^57043697939 is an apocalyptic number.

57043697939 is a deficient number, since it is larger than the sum of its proper divisors (1).

57043697939 is an equidigital number, since it uses as much as digits as its factorization.

57043697939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38578680, while the sum is 62.

The spelling of 57043697939 in words is "fifty-seven billion, forty-three million, six hundred ninety-seven thousand, nine hundred thirty-nine".