56091662782079 has 2 divisors, whose sum is σ = 56091662782080. Its totient is φ = 56091662782078.

The previous prime is 56091662782061. The next prime is 56091662782139. The reversal of 56091662782079 is 97028726619065.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56091662782079 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56091662182079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28045831391039 + 28045831391040.

It is an arithmetic number, because the mean of its divisors is an integer number (28045831391040).

Almost surely, 2^{56091662782079} is an apocalyptic number.

56091662782079 is a deficient number, since it is larger than the sum of its proper divisors (1).

56091662782079 is an equidigital number, since it uses as much as digits as its factorization.

56091662782079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 137168640, while the sum is 68.

The spelling of 56091662782079 in words is "fifty-six trillion, ninety-one billion, six hundred sixty-two million, seven hundred eighty-two thousand, seventy-nine".