23398691888 has 80 divisors (see below), whose sum is σ = 53316900000. Its totient is φ = 9807267840.

The previous prime is 23398691807. The next prime is 23398691929. The reversal of 23398691888 is 88819689332.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2395238 + ... + 2404986.

It is an arithmetic number, because the mean of its divisors is an integer number (666461250).

Almost surely, 2^23398691888 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 23398691888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26658450000).

23398691888 is an abundant number, since it is smaller than the sum of its proper divisors (29918208112).

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

23398691888 is a wasteful number, since it uses less digits than its factorization.

23398691888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10830 (or 10824 counting only the distinct ones).

The product of its digits is 35831808, while the sum is 65.

The spelling of 23398691888 in words is "twenty-three billion, three hundred ninety-eight million, six hundred ninety-one thousand, eight hundred eighty-eight".