18085201820784 has 60 divisors (see below), whose sum is σ = 57843939160176. Its totient is φ = 5167200519936.

The previous prime is 18085201820779. The next prime is 18085201820821. The reversal of 18085201820784 is 48702810258081.

It is a happy number.

18085201820784 is a `hidden beast` number, since 1 + 8 + 0 + 8 + 520 + 18 + 20 + 7 + 84 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 18085201820784.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8970833229 + ... + 8970835244.

Almost surely, 2^{18085201820784} is an apocalyptic number.

18085201820784 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18085201820784 is an abundant number, since it is smaller than the sum of its proper divisors (39758737339392).

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

18085201820784 is a wasteful number, since it uses less digits than its factorization.

18085201820784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17941668494 (or 17941668485 counting only the distinct ones).

The product of its (nonzero) digits is 2293760, while the sum is 54.

The spelling of 18085201820784 in words is "eighteen trillion, eighty-five billion, two hundred one million, eight hundred twenty thousand, seven hundred eighty-four".