56649334979 has 2 divisors, whose sum is σ = 56649334980. Its totient is φ = 56649334978.

The previous prime is 56649334939. The next prime is 56649334997. The reversal of 56649334979 is 97943394665.

Together with next prime (56649334997) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56649334979 - 2¹² = 56649330883 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (56649334939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28324667489 + 28324667490.

It is an arithmetic number, because the mean of its divisors is an integer number (28324667490).

Almost surely, 2^56649334979 is an apocalyptic number.

56649334979 is a deficient number, since it is larger than the sum of its proper divisors (1).

56649334979 is an equidigital number, since it uses as much as digits as its factorization.

56649334979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 132269760, while the sum is 65.

The spelling of 56649334979 in words is "fifty-six billion, six hundred forty-nine million, three hundred thirty-four thousand, nine hundred seventy-nine".