22523270991 has 16 divisors (see below), whose sum is σ = 32383206240. Its totient is φ = 13842432000.

The previous prime is 22523270989. The next prime is 22523271031. The reversal of 22523270991 is 19907232522.

It is a happy number.

It is not a de Polignac number, because 22523270991 - 2¹ = 22523270989 is a prime.

It is a super-2 number, since 2×22523270991² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22523275991) 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, 345510 + ... + 405491.

It is an arithmetic number, because the mean of its divisors is an integer number (2023950390).

Almost surely, 2^22523270991 is an apocalyptic number.

22523270991 is a deficient number, since it is larger than the sum of its proper divisors (9859935249).

22523270991 is a wasteful number, since it uses less digits than its factorization.

22523270991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751786.

The product of its (nonzero) digits is 136080, while the sum is 42.

The spelling of 22523270991 in words is "twenty-two billion, five hundred twenty-three million, two hundred seventy thousand, nine hundred ninety-one".