55144446656 has 56 divisors (see below), whose sum is σ = 120585396624. Its totient is φ = 24859376640.

The previous prime is 55144446649. The next prime is 55144446683. The reversal of 55144446656 is 65664444155.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 734915 + ... + 806466.

It is an arithmetic number, because the mean of its divisors is an integer number (2153310654).

Almost surely, 2^55144446656 is an apocalyptic number.

It is an amenable number.

55144446656 is an abundant number, since it is smaller than the sum of its proper divisors (65440949968).

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

55144446656 is a wasteful number, since it uses less digits than its factorization.

55144446656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1541449 (or 1541439 counting only the distinct ones).

The product of its digits is 6912000, while the sum is 50.

The spelling of 55144446656 in words is "fifty-five billion, one hundred forty-four million, four hundred forty-six thousand, six hundred fifty-six".