23151503500 has 48 divisors (see below), whose sum is σ = 50589433440. Its totient is φ = 9255739200.

The previous prime is 23151503467. The next prime is 23151503509. The reversal of 23151503500 is 530515132.

It is a super-2 number, since 2×23151503500² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (23151503509) 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, 1030386 + ... + 1052614.

It is an arithmetic number, because the mean of its divisors is an integer number (1053946530).

Almost surely, 2^23151503500 is an apocalyptic number.

23151503500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23151503500 is an abundant number, since it is smaller than the sum of its proper divisors (27437929940).

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

23151503500 is a wasteful number, since it uses less digits than its factorization.

23151503500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24331 (or 24319 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 25.

The spelling of 23151503500 in words is "twenty-three billion, one hundred fifty-one million, five hundred three thousand, five hundred".