23115122400 has 144 divisors (see below), whose sum is σ = 75439171584. Its totient is φ = 6147694080.

The previous prime is 23115122399. The next prime is 23115122447. The reversal of 23115122400 is 422151132.

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, 906627 + ... + 931773.

It is an arithmetic number, because the mean of its divisors is an integer number (523883136).

Almost surely, 2^23115122400 is an apocalyptic number.

23115122400 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 23115122400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37719585792).

23115122400 is an abundant number, since it is smaller than the sum of its proper divisors (52324049184).

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

23115122400 is a wasteful number, since it uses less digits than its factorization.

23115122400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25553 (or 25540 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 23115122400 its reverse (422151132), we get a palindrome (23537273532).

The spelling of 23115122400 in words is "twenty-three billion, one hundred fifteen million, one hundred twenty-two thousand, four hundred".