22523772999 has 32 divisors (see below), whose sum is σ = 37115567104. Its totient is φ = 11831339520.

The previous prime is 22523772979. The next prime is 22523773021. The reversal of 22523772999 is 99927732522.

It is a happy number.

It is not a de Polignac number, because 22523772999 - 2⁵ = 22523772967 is a prime.

It is a super-2 number, since 2×22523772999² (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 (22523772949) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 105379 + ... + 236964.

It is an arithmetic number, because the mean of its divisors is an integer number (1159861472).

Almost surely, 2^22523772999 is an apocalyptic number.

22523772999 is a deficient number, since it is larger than the sum of its proper divisors (14591794105).

22523772999 is a wasteful number, since it uses less digits than its factorization.

22523772999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342607.

The product of its digits is 8573040, while the sum is 57.

The spelling of 22523772999 in words is "twenty-two billion, five hundred twenty-three million, seven hundred seventy-two thousand, nine hundred ninety-nine".