18385994368896 has 256 divisors, whose sum is σ = 62988295334400. Its totient is φ = 4610907463680.

The previous prime is 18385994368877. The next prime is 18385994368967. The reversal of 18385994368896 is 69886349958381.

It is a Harshad number since it is a multiple of its sum of digits (87).

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 9863575 + ... + 11578518.

It is an arithmetic number, because the mean of its divisors is an integer number (246048028650).

Almost surely, 2^{18385994368896} is an apocalyptic number.

18385994368896 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18385994368896 is an abundant number, since it is smaller than the sum of its proper divisors (44602300965504).

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

18385994368896 is a wasteful number, since it uses less digits than its factorization.

18385994368896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21442157 (or 21442145 counting only the distinct ones).

The product of its digits is 19349176320, while the sum is 87.

The spelling of 18385994368896 in words is "eighteen trillion, three hundred eighty-five billion, nine hundred ninety-four million, three hundred sixty-eight thousand, eight hundred ninety-six".