18123202396224 has 168 divisors, whose sum is σ = 55952585214240. Its totient is φ = 5590020667392.

The previous prime is 18123202396163. The next prime is 18123202396291. The reversal of 18123202396224 is 42269320232181.

18123202396224 is a `hidden beast` number, since 1 + 8 + 1 + 2 + 32 + 0 + 2 + 396 + 224 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 18123202396224.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18785157 + ... + 19726340.

Almost surely, 2^{18123202396224} is an apocalyptic number.

It is an amenable number.

18123202396224 is an abundant number, since it is smaller than the sum of its proper divisors (37829382818016).

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

18123202396224 is a wasteful number, since it uses less digits than its factorization.

18123202396224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38511577 (or 38511564 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 45.

The spelling of 18123202396224 in words is "eighteen trillion, one hundred twenty-three billion, two hundred two million, three hundred ninety-six thousand, two hundred twenty-four".