18636209068224 has 112 divisors (see below), whose sum is σ = 56129610067200. Its totient is φ = 5401799715840.

The previous prime is 18636209068219. The next prime is 18636209068289. The reversal of 18636209068224 is 42286090263681.

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 15 ways as a sum of consecutive naturals, for example, 191776699 + ... + 191873850.

Almost surely, 2^{18636209068224} is an apocalyptic number.

It is an amenable number.

18636209068224 is an abundant number, since it is smaller than the sum of its proper divisors (37493400998976).

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

18636209068224 is a wasteful number, since it uses less digits than its factorization.

18636209068224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383650598 (or 383650588 counting only the distinct ones).

The product of its (nonzero) digits is 11943936, while the sum is 57.

The spelling of 18636209068224 in words is "eighteen trillion, six hundred thirty-six billion, two hundred nine million, sixty-eight thousand, two hundred twenty-four".