20318233201218 has 24 divisors (see below), whose sum is σ = 44075309241600. Its totient is φ = 6764671994424.

The previous prime is 20318233201169. The next prime is 20318233201237. The reversal of 20318233201218 is 81210233281302.

20318233201218 is a `hidden beast` number, since 2 + 0 + 3 + 1 + 8 + 233 + 201 + 218 = 666.

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 11 ways as a sum of consecutive naturals, for example, 672684978 + ... + 672715181.

It is an arithmetic number, because the mean of its divisors is an integer number (1836471218400).

Almost surely, 2^{20318233201218} is an apocalyptic number.

20318233201218 is an abundant number, since it is smaller than the sum of its proper divisors (23757076040382).

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

20318233201218 is a wasteful number, since it uses less digits than its factorization.

20318233201218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1345401006 (or 1345401003 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The spelling of 20318233201218 in words is "twenty trillion, three hundred eighteen billion, two hundred thirty-three million, two hundred one thousand, two hundred eighteen".