18199819982016 has 84 divisors (see below), whose sum is σ = 52171870433800. Its totient is φ = 6065981872128.

The previous prime is 18199819981961. The next prime is 18199819982039. The reversal of 18199819982016 is 61028991899181.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3987480 + ... + 7231848.

Almost surely, 2^{18199819982016} is an apocalyptic number.

18199819982016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18199819982016 is an abundant number, since it is smaller than the sum of its proper divisors (33972050451784).

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

18199819982016 is a wasteful number, since it uses less digits than its factorization.

18199819982016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3254126 (or 3254113 counting only the distinct ones).

The product of its (nonzero) digits is 40310784, while the sum is 72.

The spelling of 18199819982016 in words is "eighteen trillion, one hundred ninety-nine billion, eight hundred nineteen million, nine hundred eighty-two thousand, sixteen".