22531515013 has 6 divisors (see below), whose sum is σ = 26210129766. Its totient is φ = 19312727112.

The previous prime is 22531514989. The next prime is 22531515031. The reversal of 22531515013 is 31051513522.

It can be written as a sum of positive squares in only one way, i.e., 20499939684 + 2031575329 = 143178^2 + 45073^2 .

It is not a de Polignac number, because 22531515013 - 2³³ = 13941580421 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 (22531519013) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 229913370 + ... + 229913467.

It is an arithmetic number, because the mean of its divisors is an integer number (4368354961).

Almost surely, 2^22531515013 is an apocalyptic number.

It is an amenable number.

22531515013 is a deficient number, since it is larger than the sum of its proper divisors (3678614753).

22531515013 is an equidigital number, since it uses as much as digits as its factorization.

22531515013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459826851 (or 459826844 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 28.

The spelling of 22531515013 in words is "twenty-two billion, five hundred thirty-one million, five hundred fifteen thousand, thirteen".