172980222624 has 384 divisors, whose sum is σ = 572339900160. Its totient is φ = 50993141760.

The previous prime is 172980222599. The next prime is 172980222659. The reversal of 172980222624 is 426222089271.

172980222624 is a `hidden beast` number, since 17 + 2 + 9 + 8 + 0 + 2 + 2 + 2 + 624 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 172980222624.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 28480452 + ... + 28486524.

It is an arithmetic number, because the mean of its divisors is an integer number (1490468490).

Almost surely, 2^172980222624 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 172980222624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (286169950080).

172980222624 is an abundant number, since it is smaller than the sum of its proper divisors (399359677536).

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

172980222624 is an equidigital number, since it uses as much as digits as its factorization.

172980222624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6152 (or 6126 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The spelling of 172980222624 in words is "one hundred seventy-two billion, nine hundred eighty million, two hundred twenty-two thousand, six hundred twenty-four".