23415512500 has 72 divisors (see below), whose sum is σ = 51293154528. Its totient is φ = 9352500000.

The previous prime is 23415512453. The next prime is 23415512551. The reversal of 23415512500 is 521551432.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16136775 + ... + 16138225.

It is an arithmetic number, because the mean of its divisors is an integer number (712404924).

Almost surely, 2^23415512500 is an apocalyptic number.

23415512500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23415512500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25646577264).

23415512500 is an abundant number, since it is smaller than the sum of its proper divisors (27877642028).

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

23415512500 is a wasteful number, since it uses less digits than its factorization.

23415512500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2771 (or 2749 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

The spelling of 23415512500 in words is "twenty-three billion, four hundred fifteen million, five hundred twelve thousand, five hundred".