55942372224 has 128 divisors (see below), whose sum is σ = 165504180000. Its totient is φ = 18602680320.

The previous prime is 55942372177. The next prime is 55942372229. The reversal of 55942372224 is 42227324955.

55942372224 is a `hidden beast` number, since 5 + 59 + 4 + 2 + 372 + 224 = 666.

It is a tau number, because it is divible by the number of its divisors (128).

It is a self number, because there is not a number n which added to its sum of digits gives 55942372224.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55942372229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1435752 + ... + 1474200.

Almost surely, 2^55942372224 is an apocalyptic number.

55942372224 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55942372224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82752090000).

55942372224 is an abundant number, since it is smaller than the sum of its proper divisors (109561807776).

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

55942372224 is a wasteful number, since it uses less digits than its factorization.

55942372224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38893 (or 38875 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 45.

The spelling of 55942372224 in words is "fifty-five billion, nine hundred forty-two million, three hundred seventy-two thousand, two hundred twenty-four".