52220188944 has 640 divisors, whose sum is σ = 195416064000. Its totient is φ = 12955852800.

The previous prime is 52220188939. The next prime is 52220188963. The reversal of 52220188944 is 44988102225.

52220188944 is a `hidden beast` number, since 522 + 2 + 0 + 1 + 8 + 89 + 44 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 52220188944.

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, 91775092 + ... + 91775660.

It is an arithmetic number, because the mean of its divisors is an integer number (305337600).

Almost surely, 2^52220188944 is an apocalyptic number.

52220188944 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 52220188944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97708032000).

52220188944 is an abundant number, since it is smaller than the sum of its proper divisors (143195875056).

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

52220188944 is a wasteful number, since it uses less digits than its factorization.

52220188944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724 (or 712 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 45.

The spelling of 52220188944 in words is "fifty-two billion, two hundred twenty million, one hundred eighty-eight thousand, nine hundred forty-four".