22999587146172 has 72 divisors (see below), whose sum is σ = 71554271131616. Its totient is φ = 6065825180544.

The previous prime is 22999587146171. The next prime is 22999587146177. The reversal of 22999587146172 is 27164178599922.

It is a happy number.

22999587146172 is a `hidden beast` number, since 2 + 2 + 9 + 9 + 95 + 8 + 7 + 1 + 461 + 72 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 22999587146172.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22999587146171) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3510312223 + ... + 3510318774.

Almost surely, 2^{22999587146172} is an apocalyptic number.

It is an amenable number.

22999587146172 is an abundant number, since it is smaller than the sum of its proper divisors (48554683985444).

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

22999587146172 is a wasteful number, since it uses less digits than its factorization.

22999587146172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7020631027 (or 7020631022 counting only the distinct ones).

The product of its digits is 274337280, while the sum is 72.

The spelling of 22999587146172 in words is "twenty-two trillion, nine hundred ninety-nine billion, five hundred eighty-seven million, one hundred forty-six thousand, one hundred seventy-two".