23708115990 has 120 divisors (see below), whose sum is σ = 69029828208. Its totient is φ = 5835810240.

The previous prime is 23708115983. The next prime is 23708116007. The reversal of 23708115990 is 9951180732.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 50295 + ... + 223485.

Almost surely, 2^23708115990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23708115990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34514914104).

23708115990 is an abundant number, since it is smaller than the sum of its proper divisors (45321712218).

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

23708115990 is a wasteful number, since it uses less digits than its factorization.

23708115990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173236 (or 173214 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The spelling of 23708115990 in words is "twenty-three billion, seven hundred eight million, one hundred fifteen thousand, nine hundred ninety".