18786332531168 has 12 divisors (see below), whose sum is σ = 36985592170800. Its totient is φ = 9393166265568.

The previous prime is 18786332531167. The next prime is 18786332531191. The reversal of 18786332531168 is 86113523368781.

It is a self number, because there is not a number n which added to its sum of digits gives 18786332531168.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18786332531167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 293536445768 + ... + 293536445831.

It is an arithmetic number, because the mean of its divisors is an integer number (3082132680900).

Almost surely, 2^{18786332531168} is an apocalyptic number.

It is an amenable number.

18786332531168 is a deficient number, since it is larger than the sum of its proper divisors (18199259639632).

18786332531168 is an equidigital number, since it uses as much as digits as its factorization.

18786332531168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 587072891609 (or 587072891601 counting only the distinct ones).

The product of its digits is 34836480, while the sum is 62.

The spelling of 18786332531168 in words is "eighteen trillion, seven hundred eighty-six billion, three hundred thirty-two million, five hundred thirty-one thousand, one hundred sixty-eight".