18028566080 has 168 divisors, whose sum is σ = 50038747776. Its totient is φ = 6168960000.

The previous prime is 18028566071. The next prime is 18028566131. The reversal of 18028566080 is 8066582081.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11774915 + ... + 11776445.

Almost surely, 2^18028566080 is an apocalyptic number.

18028566080 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 18028566080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25019373888).

18028566080 is an abundant number, since it is smaller than the sum of its proper divisors (32010181696).

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

18028566080 is a wasteful number, since it uses less digits than its factorization.

18028566080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2313 (or 2296 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 44.

The spelling of 18028566080 in words is "eighteen billion, twenty-eight million, five hundred sixty-six thousand, eighty".