57138564377 has 2 divisors, whose sum is σ = 57138564378. Its totient is φ = 57138564376.

The previous prime is 57138564239. The next prime is 57138564409. The reversal of 57138564377 is 77346583175.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33306615001 + 23831949376 = 182501^2 + 154376^2 .

It is a cyclic number.

It is not a de Polignac number, because 57138564377 - 2⁸ = 57138564121 is a prime.

It is not a weakly prime, because it can be changed into another prime (57138564577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28569282188 + 28569282189.

It is an arithmetic number, because the mean of its divisors is an integer number (28569282189).

Almost surely, 2^57138564377 is an apocalyptic number.

It is an amenable number.

57138564377 is a deficient number, since it is larger than the sum of its proper divisors (1).

57138564377 is an equidigital number, since it uses as much as digits as its factorization.

57138564377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14817600, while the sum is 56.

The spelling of 57138564377 in words is "fifty-seven billion, one hundred thirty-eight million, five hundred sixty-four thousand, three hundred seventy-seven".