56644621424 has 10 divisors (see below), whose sum is σ = 109748954040. Its totient is φ = 28322310704.

The previous prime is 56644621409. The next prime is 56644621441. The reversal of 56644621424 is 42412644665.

It is a super-2 number, since 2×56644621424² (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 as a sum of consecutive naturals, namely, 1770144404 + ... + 1770144435.

It is an arithmetic number, because the mean of its divisors is an integer number (10974895404).

Almost surely, 2^56644621424 is an apocalyptic number.

It is an amenable number.

56644621424 is a deficient number, since it is larger than the sum of its proper divisors (53104332616).

56644621424 is a wasteful number, since it uses less digits than its factorization.

56644621424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3540288847 (or 3540288841 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 44.

The spelling of 56644621424 in words is "fifty-six billion, six hundred forty-four million, six hundred twenty-one thousand, four hundred twenty-four".