57168771977 has 2 divisors, whose sum is σ = 57168771978. Its totient is φ = 57168771976.

The previous prime is 57168771971. The next prime is 57168772027. The reversal of 57168771977 is 77917786175.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42596419321 + 14572352656 = 206389^2 + 120716^2 .

It is a cyclic number.

It is not a de Polignac number, because 57168771977 - 2⁸ = 57168771721 is a prime.

It is not a weakly prime, because it can be changed into another prime (57168771971) 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, 28584385988 + 28584385989.

It is an arithmetic number, because the mean of its divisors is an integer number (28584385989).

Almost surely, 2^57168771977 is an apocalyptic number.

It is an amenable number.

57168771977 is a deficient number, since it is larger than the sum of its proper divisors (1).

57168771977 is an equidigital number, since it uses as much as digits as its factorization.

57168771977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36303120, while the sum is 65.

The spelling of 57168771977 in words is "fifty-seven billion, one hundred sixty-eight million, seven hundred seventy-one thousand, nine hundred seventy-seven".