56777895679 has 2 divisors, whose sum is σ = 56777895680. Its totient is φ = 56777895678.

The previous prime is 56777895667. The next prime is 56777895709. The reversal of 56777895679 is 97659877765.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56777895679 - 2²³ = 56769507071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56777895619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28388947839 + 28388947840.

It is an arithmetic number, because the mean of its divisors is an integer number (28388947840).

Almost surely, 2^56777895679 is an apocalyptic number.

56777895679 is a deficient number, since it is larger than the sum of its proper divisors (1).

56777895679 is an equidigital number, since it uses as much as digits as its factorization.

56777895679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1400263200, while the sum is 76.

The spelling of 56777895679 in words is "fifty-six billion, seven hundred seventy-seven million, eight hundred ninety-five thousand, six hundred seventy-nine".