18118800000 has 576 divisors, whose sum is σ = 74582726400. Its totient is φ = 4135680000.

The previous prime is 18118799911. The next prime is 18118800013. The reversal of 18118800000 is 881181.

It is a tau number, because it is divible by the number of its divisors (576).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 25199641 + ... + 25200359.

It is an arithmetic number, because the mean of its divisors is an integer number (129483900).

Almost surely, 2^18118800000 is an apocalyptic number.

18118800000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18118800000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37291363200).

18118800000 is an abundant number, since it is smaller than the sum of its proper divisors (56463926400).

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

18118800000 is an frugal number, since it uses more digits than its factorization.

18118800000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771 (or 736 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 27.

The spelling of 18118800000 in words is "eighteen billion, one hundred eighteen million, eight hundred thousand".