55424643120 has 640 divisors, whose sum is σ = 250555392000. Its totient is φ = 10910039040.

The previous prime is 55424643097. The next prime is 55424643137. The reversal of 55424643120 is 2134642455.

55424643120 is a `hidden beast` number, since 5 + 5 + 4 + 2 + 4 + 643 + 1 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3151311 + ... + 3168849.

It is an arithmetic number, because the mean of its divisors is an integer number (391492800).

Almost surely, 2^55424643120 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 55424643120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125277696000).

55424643120 is an abundant number, since it is smaller than the sum of its proper divisors (195130748880).

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

55424643120 is a wasteful number, since it uses less digits than its factorization.

55424643120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17598 (or 17586 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

The spelling of 55424643120 in words is "fifty-five billion, four hundred twenty-four million, six hundred forty-three thousand, one hundred twenty".