56220409945 has 24 divisors (see below), whose sum is σ = 80148887424. Its totient is φ = 37730893536.

The previous prime is 56220409939. The next prime is 56220409957. The reversal of 56220409945 is 54990402265.

It is not a de Polignac number, because 56220409945 - 2⁵ = 56220409913 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56220409895 and 56220409904.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2429667 + ... + 2452696.

It is an arithmetic number, because the mean of its divisors is an integer number (3339536976).

Almost surely, 2^56220409945 is an apocalyptic number.

It is an amenable number.

56220409945 is a deficient number, since it is larger than the sum of its proper divisors (23928477479).

56220409945 is a wasteful number, since it uses less digits than its factorization.

56220409945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4882429 (or 4882422 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 46.

The spelling of 56220409945 in words is "fifty-six billion, two hundred twenty million, four hundred nine thousand, nine hundred forty-five".