18281086080 has 128 divisors (see below), whose sum is σ = 58405216320. Its totient is φ = 4863725568.

The previous prime is 18281086069. The next prime is 18281086111. The reversal of 18281086080 is 8068018281.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 839814 + ... + 861306.

Almost surely, 2^18281086080 is an apocalyptic number.

18281086080 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 18281086080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29202608160).

18281086080 is an abundant number, since it is smaller than the sum of its proper divisors (40124130240).

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

18281086080 is a wasteful number, since it uses less digits than its factorization.

18281086080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21958 (or 21946 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 42.

The spelling of 18281086080 in words is "eighteen billion, two hundred eighty-one million, eighty-six thousand, eighty".