18366868333536 has 24 divisors (see below), whose sum is σ = 48213029375784. Its totient is φ = 6122289444480.

The previous prime is 18366868333501. The next prime is 18366868333537. The reversal of 18366868333536 is 63533386866381.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18366868333537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95660772475 + ... + 95660772666.

It is an arithmetic number, because the mean of its divisors is an integer number (2008876223991).

Almost surely, 2^{18366868333536} is an apocalyptic number.

18366868333536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18366868333536 is an abundant number, since it is smaller than the sum of its proper divisors (29846161042248).

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

18366868333536 is a wasteful number, since it uses less digits than its factorization.

18366868333536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191321545154 (or 191321545146 counting only the distinct ones).

The product of its digits is 806215680, while the sum is 69.

The spelling of 18366868333536 in words is "eighteen trillion, three hundred sixty-six billion, eight hundred sixty-eight million, three hundred thirty-three thousand, five hundred thirty-six".