22517064272 has 20 divisors (see below), whose sum is σ = 45034129536. Its totient is φ = 10895353440.

The previous prime is 22517064259. The next prime is 22517064307. The reversal of 22517064272 is 27246071522.

It is a happy number.

22517064272 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22698158 + ... + 22699149.

Almost surely, 2^22517064272 is an apocalyptic number.

It is an amenable number.

22517064272 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

22517064272 is a wasteful number, since it uses less digits than its factorization.

22517064272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45397346 (or 45397340 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 38.

The spelling of 22517064272 in words is "twenty-two billion, five hundred seventeen million, sixty-four thousand, two hundred seventy-two".