18256386228204 has 12 divisors (see below), whose sum is σ = 42598234532504. Its totient is φ = 6085462076064.

The previous prime is 18256386228193. The next prime is 18256386228221. The reversal of 18256386228204 is 40282268365281.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×18256386228204² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 760682759497 + ... + 760682759520.

Almost surely, 2^{18256386228204} is an apocalyptic number.

It is an amenable number.

18256386228204 is an abundant number, since it is smaller than the sum of its proper divisors (24341848304300).

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

18256386228204 is a wasteful number, since it uses less digits than its factorization.

18256386228204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1521365519024 (or 1521365519022 counting only the distinct ones).

The product of its (nonzero) digits is 17694720, while the sum is 57.

The spelling of 18256386228204 in words is "eighteen trillion, two hundred fifty-six billion, three hundred eighty-six million, two hundred twenty-eight thousand, two hundred four".