18363960198216 has 64 divisors (see below), whose sum is σ = 51012058819200. Its totient is φ = 6121193073984.

The previous prime is 18363960198191. The next prime is 18363960198251. The reversal of 18363960198216 is 61289106936381.

18363960198216 is a `hidden beast` number, since 1 + 8 + 3 + 6 + 3 + 9 + 601 + 9 + 8 + 2 + 16 = 666.

It is a super-2 number, since 2×18363960198216² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9855861 + ... + 11570043.

It is an arithmetic number, because the mean of its divisors is an integer number (797063419050).

Almost surely, 2^{18363960198216} is an apocalyptic number.

It is an amenable number.

18363960198216 is an abundant number, since it is smaller than the sum of its proper divisors (32648098620984).

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

18363960198216 is a wasteful number, since it uses less digits than its factorization.

18363960198216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1763795 (or 1763785 counting only the distinct ones).

The product of its (nonzero) digits is 20155392, while the sum is 63.

The spelling of 18363960198216 in words is "eighteen trillion, three hundred sixty-three billion, nine hundred sixty million, one hundred ninety-eight thousand, two hundred sixteen".