18355080168 has 80 divisors (see below), whose sum is σ = 51638114880. Its totient is φ = 6091358112.

The previous prime is 18355080157. The next prime is 18355080181. The reversal of 18355080168 is 86108055381.

18355080168 is a `hidden beast` number, since 1 + 8 + 3 + 550 + 80 + 16 + 8 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 84705 + ... + 209487.

It is an arithmetic number, because the mean of its divisors is an integer number (645476436).

Almost surely, 2^18355080168 is an apocalyptic number.

18355080168 is a gapful number since it is divisible by the number (18) 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 18355080168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25819057440).

18355080168 is an abundant number, since it is smaller than the sum of its proper divisors (33283034712).

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

18355080168 is a wasteful number, since it uses less digits than its factorization.

18355080168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125028 (or 125015 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 45.

The spelling of 18355080168 in words is "eighteen billion, three hundred fifty-five million, eighty thousand, one hundred sixty-eight".