18104978112 has 336 divisors, whose sum is σ = 54975191040. Its totient is φ = 5247590400.

The previous prime is 18104978069. The next prime is 18104978117. The reversal of 18104978112 is 21187940181.

It is not an unprimeable number, because it can be changed into a prime (18104978117) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 41241189 + ... + 41241627.

It is an arithmetic number, because the mean of its divisors is an integer number (163616640).

Almost surely, 2^18104978112 is an apocalyptic number.

18104978112 is a gapful number since it is divisible by the number (12) 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 18104978112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27487595520).

18104978112 is an abundant number, since it is smaller than the sum of its proper divisors (36870212928).

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

18104978112 is a wasteful number, since it uses less digits than its factorization.

18104978112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552 (or 529 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 42.

The spelling of 18104978112 in words is "eighteen billion, one hundred four million, nine hundred seventy-eight thousand, one hundred twelve".