22517972892 has 48 divisors (see below), whose sum is σ = 61452563200. Its totient is φ = 7110938160.

The previous prime is 22517972879. The next prime is 22517972941. The reversal of 22517972892 is 29827971522.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5484784 + ... + 5488887.

Almost surely, 2^22517972892 is an apocalyptic number.

It is an amenable number.

22517972892 is an abundant number, since it is smaller than the sum of its proper divisors (38934590308).

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

22517972892 is a wasteful number, since it uses less digits than its factorization.

22517972892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10973703 (or 10973695 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 54.

The spelling of 22517972892 in words is "twenty-two billion, five hundred seventeen million, nine hundred seventy-two thousand, eight hundred ninety-two".