22526087997 has 16 divisors (see below), whose sum is σ = 34400592512. Its totient is φ = 12843878400.

The previous prime is 22526087981. The next prime is 22526087999. The reversal of 22526087997 is 79978062522.

It is a happy number.

It is not a de Polignac number, because 22526087997 - 2⁴ = 22526087981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22526087999) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1164004 + ... + 1183197.

It is an arithmetic number, because the mean of its divisors is an integer number (2150037032).

Almost surely, 2^22526087997 is an apocalyptic number.

It is an amenable number.

22526087997 is a deficient number, since it is larger than the sum of its proper divisors (11874504515).

22526087997 is a wasteful number, since it uses less digits than its factorization.

22526087997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2347668.

The product of its (nonzero) digits is 7620480, while the sum is 57.

The spelling of 22526087997 in words is "twenty-two billion, five hundred twenty-six million, eighty-seven thousand, nine hundred ninety-seven".