57691044979 has 2 divisors, whose sum is σ = 57691044980. Its totient is φ = 57691044978.

The previous prime is 57691044913. The next prime is 57691044989. The reversal of 57691044979 is 97944019675.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 57691044979 - 2¹³ = 57691036787 is a prime.

It is a super-2 number, since 2×57691044979² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (57691044989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28845522489 + 28845522490.

It is an arithmetic number, because the mean of its divisors is an integer number (28845522490).

Almost surely, 2^57691044979 is an apocalyptic number.

57691044979 is a deficient number, since it is larger than the sum of its proper divisors (1).

57691044979 is an equidigital number, since it uses as much as digits as its factorization.

57691044979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17146080, while the sum is 61.

The spelling of 57691044979 in words is "fifty-seven billion, six hundred ninety-one million, forty-four thousand, nine hundred seventy-nine".