18399999996 has 54 divisors (see below), whose sum is σ = 54104767080. Its totient is φ = 5257142352.

The previous prime is 18399999971. The next prime is 18400000027. The reversal of 18399999996 is 69999999381.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 5213656 + ... + 5217183.

Almost surely, 2^18399999996 is an apocalyptic number.

It is an amenable number.

18399999996 is an abundant number, since it is smaller than the sum of its proper divisors (35704767084).

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

18399999996 is a wasteful number, since it uses less digits than its factorization.

18399999996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10430863 (or 10430851 counting only the distinct ones).

The product of its digits is 688747536, while the sum is 81.

The spelling of 18399999996 in words is "eighteen billion, three hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred ninety-six".