57916279661 has 2 divisors, whose sum is σ = 57916279662. Its totient is φ = 57916279660.

The previous prime is 57916279649. The next prime is 57916279699. The reversal of 57916279661 is 16697261975.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40473794761 + 17442484900 = 201181^2 + 132070^2 .

It is a cyclic number.

It is not a de Polignac number, because 57916279661 - 2³⁰ = 56842537837 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57916279661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57916279621) 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, 28958139830 + 28958139831.

It is an arithmetic number, because the mean of its divisors is an integer number (28958139831).

Almost surely, 2^57916279661 is an apocalyptic number.

It is an amenable number.

57916279661 is a deficient number, since it is larger than the sum of its proper divisors (1).

57916279661 is an equidigital number, since it uses as much as digits as its factorization.

57916279661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8573040, while the sum is 59.

The spelling of 57916279661 in words is "fifty-seven billion, nine hundred sixteen million, two hundred seventy-nine thousand, six hundred sixty-one".