18004247088 has 80 divisors (see below), whose sum is σ = 48997161600. Its totient is φ = 5681111040.

The previous prime is 18004247087. The next prime is 18004247123. The reversal of 18004247088 is 88074240081.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (18004247083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1278003 + ... + 1292013.

It is an arithmetic number, because the mean of its divisors is an integer number (612464520).

Almost surely, 2^18004247088 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 18004247088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24498580800).

18004247088 is an abundant number, since it is smaller than the sum of its proper divisors (30992914512).

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

18004247088 is a wasteful number, since it uses less digits than its factorization.

18004247088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15450 (or 15444 counting only the distinct ones).

The product of its (nonzero) digits is 114688, while the sum is 42.

The spelling of 18004247088 in words is "eighteen billion, four million, two hundred forty-seven thousand, eighty-eight".