56420626779 has 12 divisors (see below), whose sum is σ = 88905230232. Its totient is φ = 34194319200.

The previous prime is 56420626777. The next prime is 56420626793. The reversal of 56420626779 is 97762602465.

56420626779 is a `hidden beast` number, since 5 + 6 + 4 + 2 + 0 + 626 + 7 + 7 + 9 = 666.

It is not a de Polignac number, because 56420626779 - 2¹ = 56420626777 is a prime.

It is a super-2 number, since 2×56420626779² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56420626777) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 284952562 + ... + 284952759.

It is an arithmetic number, because the mean of its divisors is an integer number (7408769186).

Almost surely, 2^56420626779 is an apocalyptic number.

56420626779 is a deficient number, since it is larger than the sum of its proper divisors (32484603453).

56420626779 is a wasteful number, since it uses less digits than its factorization.

56420626779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569905338 (or 569905335 counting only the distinct ones).

The product of its (nonzero) digits is 7620480, while the sum is 54.

The spelling of 56420626779 in words is "fifty-six billion, four hundred twenty million, six hundred twenty-six thousand, seven hundred seventy-nine".