18918699795996 has 288 divisors, whose sum is σ = 60937557811200. Its totient is φ = 4535950446720.

The previous prime is 18918699795973. The next prime is 18918699796037. The reversal of 18918699795996 is 69959799681981.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5013445 + ... + 7935491.

It is an arithmetic number, because the mean of its divisors is an integer number (211588742400).

Almost surely, 2^{18918699795996} 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 18918699795996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30468778905600).

18918699795996 is an abundant number, since it is smaller than the sum of its proper divisors (42018858015204).

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

18918699795996 is a wasteful number, since it uses less digits than its factorization.

18918699795996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2922110 (or 2922083 counting only the distinct ones).

The product of its digits is 42855402240, while the sum is 96.

The spelling of 18918699795996 in words is "eighteen trillion, nine hundred eighteen billion, six hundred ninety-nine million, seven hundred ninety-five thousand, nine hundred ninety-six".