18200278680 has 64 divisors (see below), whose sum is σ = 54749744640. Its totient is φ = 4840171392.

The previous prime is 18200278673. The next prime is 18200278703. The reversal of 18200278680 is 8687200281.

It is a congruent number.

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, 162594 + ... + 250673.

It is an arithmetic number, because the mean of its divisors is an integer number (855464760).

Almost surely, 2^18200278680 is an apocalyptic number.

18200278680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18200278680 is an abundant number, since it is smaller than the sum of its proper divisors (36549465960).

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

18200278680 is a wasteful number, since it uses less digits than its factorization.

18200278680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413648 (or 413644 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 42.

The spelling of 18200278680 in words is "eighteen billion, two hundred million, two hundred seventy-eight thousand, six hundred eighty".