18855430365168 has 100 divisors (see below), whose sum is σ = 54574842341448. Its totient is φ = 6284941165440.

The previous prime is 18855430365157. The next prime is 18855430365197. The reversal of 18855430365168 is 86156303455881.

18855430365168 is a `hidden beast` number, since 1 + 8 + 8 + 5 + 5 + 430 + 36 + 5 + 168 = 666.

It is a congruent number.

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, 43148055 + ... + 43582857.

Almost surely, 2^{18855430365168} is an apocalyptic number.

18855430365168 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

18855430365168 is an abundant number, since it is smaller than the sum of its proper divisors (35719411976280).

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

18855430365168 is a wasteful number, since it uses less digits than its factorization.

18855430365168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468284 (or 468269 counting only the distinct ones).

The product of its (nonzero) digits is 82944000, while the sum is 63.

The spelling of 18855430365168 in words is "eighteen trillion, eight hundred fifty-five billion, four hundred thirty million, three hundred sixty-five thousand, one hundred sixty-eight".