18266487331326 has 96 divisors (see below), whose sum is σ = 42702775119360. Its totient is φ = 5190707313792.

The previous prime is 18266487331289. The next prime is 18266487331331. The reversal of 18266487331326 is 62313378466281.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 18266487331326.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12827626 + ... + 14180301.

It is an arithmetic number, because the mean of its divisors is an integer number (444820574160).

Almost surely, 2^{18266487331326} is an apocalyptic number.

18266487331326 is an abundant number, since it is smaller than the sum of its proper divisors (24436287788034).

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

18266487331326 is a wasteful number, since it uses less digits than its factorization.

18266487331326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27008010 (or 27007997 counting only the distinct ones).

The product of its digits is 41803776, while the sum is 60.

The spelling of 18266487331326 in words is "eighteen trillion, two hundred sixty-six billion, four hundred eighty-seven million, three hundred thirty-one thousand, three hundred twenty-six".