57997166687 has 2 divisors, whose sum is σ = 57997166688. Its totient is φ = 57997166686.

The previous prime is 57997166587. The next prime is 57997166693. The reversal of 57997166687 is 78666179975.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 57997166687 - 2¹² = 57997162591 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57997166687.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57997166587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28998583343 + 28998583344.

It is an arithmetic number, because the mean of its divisors is an integer number (28998583344).

Almost surely, 2^57997166687 is an apocalyptic number.

57997166687 is a deficient number, since it is larger than the sum of its proper divisors (1).

57997166687 is an equidigital number, since it uses as much as digits as its factorization.

57997166687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 240045120, while the sum is 71.

The spelling of 57997166687 in words is "fifty-seven billion, nine hundred ninety-seven million, one hundred sixty-six thousand, six hundred eighty-seven".