55626431644 has 48 divisors (see below), whose sum is σ = 112061880000. Its totient is φ = 23666720256.

The previous prime is 55626431639. The next prime is 55626431669. The reversal of 55626431644 is 44613462655.

It is a junction number, because it is equal to n+sod(n) for n = 55626431594 and 55626431603.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12718242 + ... + 12722614.

It is an arithmetic number, because the mean of its divisors is an integer number (2334622500).

Almost surely, 2^55626431644 is an apocalyptic number.

It is an amenable number.

55626431644 is an abundant number, since it is smaller than the sum of its proper divisors (56435448356).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55626431644 is a wasteful number, since it uses less digits than its factorization.

55626431644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7582 (or 7580 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 46.

The spelling of 55626431644 in words is "fifty-five billion, six hundred twenty-six million, four hundred thirty-one thousand, six hundred forty-four".