23502015530 has 24 divisors (see below), whose sum is σ = 49210343748. Its totient is φ = 8057833728.

The previous prime is 23502015521. The next prime is 23502015547. The reversal of 23502015530 is 3551020532.

It can be written as a sum of positive squares in 2 ways, for example, as 23024724121 + 477291409 = 151739^2 + 21847^2 .

It is a super-2 number, since 2×23502015530² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23502015530.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23981159 + ... + 23982138.

Almost surely, 2^23502015530 is an apocalyptic number.

23502015530 is an abundant number, since it is smaller than the sum of its proper divisors (25708328218).

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

23502015530 is a wasteful number, since it uses less digits than its factorization.

23502015530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47963318 (or 47963311 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 26.

The spelling of 23502015530 in words is "twenty-three billion, five hundred two million, fifteen thousand, five hundred thirty".