55626179840 has 216 divisors, whose sum is σ = 169088526432. Its totient is φ = 17337815040.

The previous prime is 55626179821. The next prime is 55626179867. The reversal of 55626179840 is 4897162655.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 649607 + ... + 730233.

It is an arithmetic number, because the mean of its divisors is an integer number (782817252).

Almost surely, 2^55626179840 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55626179840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84544263216).

55626179840 is an abundant number, since it is smaller than the sum of its proper divisors (113462346592).

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

55626179840 is a wasteful number, since it uses less digits than its factorization.

55626179840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80673 (or 80652 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 53.

The spelling of 55626179840 in words is "fifty-five billion, six hundred twenty-six million, one hundred seventy-nine thousand, eight hundred forty".