18000011000080 has 40 divisors (see below), whose sum is σ = 41865741438912. Its totient is φ = 7197300595584.

The previous prime is 18000011000071. The next prime is 18000011000087. The reversal of 18000011000080 is 8000011000081.

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

It is not an unprimeable number, because it can be changed into a prime (18000011000087) 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, 42032574 + ... + 42458653.

Almost surely, 2^{18000011000080} is an apocalyptic number.

18000011000080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18000011000080 is an abundant number, since it is smaller than the sum of its proper divisors (23865730438832).

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

18000011000080 is a wasteful number, since it uses less digits than its factorization.

18000011000080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84493903 (or 84493897 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Subtracting from 18000011000080 its reverse (8000011000081), we obtain a palindrome (9999999999999).

The spelling of 18000011000080 in words is "eighteen trillion, eleven million, eighty", and thus it is an aban number and an uban number.