23155493400 has 576 divisors, whose sum is σ = 87451902720. Its totient is φ = 5452185600.

The previous prime is 23155493341. The next prime is 23155493407. The reversal of 23155493400 is 439455132.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23155493407) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 99379684 + ... + 99379916.

It is an arithmetic number, because the mean of its divisors is an integer number (151826220).

Almost surely, 2^23155493400 is an apocalyptic number.

23155493400 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 23155493400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43725951360).

23155493400 is an abundant number, since it is smaller than the sum of its proper divisors (64296409320).

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

23155493400 is a wasteful number, since it uses less digits than its factorization.

23155493400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436 (or 424 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The spelling of 23155493400 in words is "twenty-three billion, one hundred fifty-five million, four hundred ninety-three thousand, four hundred".