23855288856 has 192 divisors, whose sum is σ = 71692158720. Its totient is φ = 6479066880.

The previous prime is 23855288827. The next prime is 23855288887. The reversal of 23855288856 is 65888255832.

It is a self number, because there is not a number n which added to its sum of digits gives 23855288856.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16085091 + ... + 16086573.

It is an arithmetic number, because the mean of its divisors is an integer number (373396660).

Almost surely, 2^23855288856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23855288856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35846079360).

23855288856 is an abundant number, since it is smaller than the sum of its proper divisors (47836869864).

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

23855288856 is a wasteful number, since it uses less digits than its factorization.

23855288856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1726 (or 1699 counting only the distinct ones).

The product of its digits is 36864000, while the sum is 60.

The spelling of 23855288856 in words is "twenty-three billion, eight hundred fifty-five million, two hundred eighty-eight thousand, eight hundred fifty-six".