55644879556 has 48 divisors (see below), whose sum is σ = 113195980800. Its totient is φ = 23441996448.

The previous prime is 55644879551. The next prime is 55644879557. The reversal of 55644879556 is 65597844655.

It is not an unprimeable number, because it can be changed into a prime (55644879551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 446715 + ... + 557533.

It is an arithmetic number, because the mean of its divisors is an integer number (2358249600).

Almost surely, 2^55644879556 is an apocalyptic number.

It is an amenable number.

55644879556 is an abundant number, since it is smaller than the sum of its proper divisors (57551101244).

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

55644879556 is a wasteful number, since it uses less digits than its factorization.

55644879556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111136 (or 111134 counting only the distinct ones).

The product of its digits is 181440000, while the sum is 64.

The spelling of 55644879556 in words is "fifty-five billion, six hundred forty-four million, eight hundred seventy-nine thousand, five hundred fifty-six".