18047288080 has 40 divisors (see below), whose sum is σ = 41992537752. Its totient is φ = 7213307904.

The previous prime is 18047288071. The next prime is 18047288087. The reversal of 18047288080 is 8088274081.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 11767042576 + 6280245504 = 108476^2 + 79248^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 18047288080.

It is not an unprimeable number, because it can be changed into a prime (18047288087) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16794 + ... + 190726.

Almost surely, 2^18047288080 is an apocalyptic number.

18047288080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18047288080 is an abundant number, since it is smaller than the sum of its proper divisors (23945249672).

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

18047288080 is a wasteful number, since it uses less digits than its factorization.

18047288080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175243 (or 175237 counting only the distinct ones).

The product of its (nonzero) digits is 229376, while the sum is 46.

The spelling of 18047288080 in words is "eighteen billion, forty-seven million, two hundred eighty-eight thousand, eighty".