23437988736 has 128 divisors (see below), whose sum is σ = 62939385600. Its totient is φ = 7727505408.

The previous prime is 23437988729. The next prime is 23437988737. The reversal of 23437988736 is 63788973432.

It is a tau number, because it is divible by the number of its divisors (128).

It is a self number, because there is not a number n which added to its sum of digits gives 23437988736.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23437988737) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17987061 + ... + 17988363.

It is an arithmetic number, because the mean of its divisors is an integer number (491713950).

Almost surely, 2^23437988736 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 23437988736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31469692800).

23437988736 is an abundant number, since it is smaller than the sum of its proper divisors (39501396864).

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

23437988736 is a wasteful number, since it uses less digits than its factorization.

23437988736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1796 (or 1784 counting only the distinct ones).

The product of its digits is 36578304, while the sum is 60.

Subtracting from 23437988736 its product of digits (36578304), we obtain a palindrome (23401410432).

The spelling of 23437988736 in words is "twenty-three billion, four hundred thirty-seven million, nine hundred eighty-eight thousand, seven hundred thirty-six".