56642224664 has 16 divisors (see below), whose sum is σ = 106209160200. Its totient is φ = 28319781952.

The previous prime is 56642224643. The next prime is 56642224687. The reversal of 56642224664 is 46642224665.

It is a super-2 number, since 2×56642224664² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28004 + ... + 337740.

Almost surely, 2^56642224664 is an apocalyptic number.

It is an amenable number.

56642224664 is a deficient number, since it is larger than the sum of its proper divisors (49566935536).

56642224664 is a wasteful number, since it uses less digits than its factorization.

56642224664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332602 (or 332598 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 47.

Subtracting from 56642224664 its reverse (46642224665), we obtain a palindrome (9999999999).

The spelling of 56642224664 in words is "fifty-six billion, six hundred forty-two million, two hundred twenty-four thousand, six hundred sixty-four".