23187965500 has 96 divisors (see below), whose sum is σ = 57945259008. Its totient is φ = 7940808000.

The previous prime is 23187965483. The next prime is 23187965501. The reversal of 23187965500 is 556978132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23187965501) 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, 3395089 + ... + 3401911.

It is an arithmetic number, because the mean of its divisors is an integer number (603596448).

Almost surely, 2^23187965500 is an apocalyptic number.

23187965500 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 23187965500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28972629504).

23187965500 is an abundant number, since it is smaller than the sum of its proper divisors (34757293508).

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

23187965500 is a wasteful number, since it uses less digits than its factorization.

23187965500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7820 (or 7808 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 46.

The spelling of 23187965500 in words is "twenty-three billion, one hundred eighty-seven million, nine hundred sixty-five thousand, five hundred".