56565402407 has 4 divisors (see below), whose sum is σ = 56589650520. Its totient is φ = 56541154296.

The previous prime is 56565402367. The next prime is 56565402409. The reversal of 56565402407 is 70420456565.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56565402407 - 2⁶ = 56565402343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56565402409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12120557 + ... + 12125222.

It is an arithmetic number, because the mean of its divisors is an integer number (14147412630).

Almost surely, 2^56565402407 is an apocalyptic number.

56565402407 is a deficient number, since it is larger than the sum of its proper divisors (24248113).

56565402407 is a wasteful number, since it uses less digits than its factorization.

56565402407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24248112.

The product of its (nonzero) digits is 1008000, while the sum is 44.

The spelling of 56565402407 in words is "fifty-six billion, five hundred sixty-five million, four hundred two thousand, four hundred seven".