56406628979 has 2 divisors, whose sum is σ = 56406628980. Its totient is φ = 56406628978.

The previous prime is 56406628969. The next prime is 56406628991. The reversal of 56406628979 is 97982660465.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56406628979 - 2⁴ = 56406628963 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (56406628969) 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, 28203314489 + 28203314490.

It is an arithmetic number, because the mean of its divisors is an integer number (28203314490).

Almost surely, 2^56406628979 is an apocalyptic number.

56406628979 is a deficient number, since it is larger than the sum of its proper divisors (1).

56406628979 is an equidigital number, since it uses as much as digits as its factorization.

56406628979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 39191040, while the sum is 62.

The spelling of 56406628979 in words is "fifty-six billion, four hundred six million, six hundred twenty-eight thousand, nine hundred seventy-nine".