18036171868068 has 48 divisors (see below), whose sum is σ = 46765774440000. Its totient is φ = 6011372150784.

The previous prime is 18036171868051. The next prime is 18036171868097. The reversal of 18036171868068 is 86086817163081.

18036171868068 is a `hidden beast` number, since 1 + 8 + 0 + 3 + 617 + 1 + 8 + 6 + 8 + 0 + 6 + 8 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 18036171867996 and 18036171868014.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8563293 + ... + 10459556.

It is an arithmetic number, because the mean of its divisors is an integer number (974286967500).

Almost surely, 2^{18036171868068} is an apocalyptic number.

18036171868068 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

18036171868068 is an abundant number, since it is smaller than the sum of its proper divisors (28729602571932).

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

18036171868068 is a wasteful number, since it uses less digits than its factorization.

18036171868068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19031641 (or 19031633 counting only the distinct ones).

The product of its (nonzero) digits is 18579456, while the sum is 63.

The spelling of 18036171868068 in words is "eighteen trillion, thirty-six billion, one hundred seventy-one million, eight hundred sixty-eight thousand, sixty-eight".