18336850185556 has 12 divisors (see below), whose sum is σ = 36673700371168. Its totient is φ = 7858650079512.

The previous prime is 18336850185529. The next prime is 18336850185559. The reversal of 18336850185556 is 65558105863381.

18336850185556 is an admirable number.

It is a super-2 number, since 2×18336850185556² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18336850185559) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 327443753286 + ... + 327443753341.

Almost surely, 2^{18336850185556} is an apocalyptic number.

It is an amenable number.

18336850185556 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18336850185556 is a wasteful number, since it uses less digits than its factorization.

18336850185556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654887506638 (or 654887506636 counting only the distinct ones).

The product of its (nonzero) digits is 103680000, while the sum is 64.

The spelling of 18336850185556 in words is "eighteen trillion, three hundred thirty-six billion, eight hundred fifty million, one hundred eighty-five thousand, five hundred fifty-six".