18216320835104 has 72 divisors (see below), whose sum is σ = 41771640148560. Its totient is φ = 7797074173056.

The previous prime is 18216320835103. The next prime is 18216320835143. The reversal of 18216320835104 is 40153802361281.

It is not an unprimeable number, because it can be changed into a prime (18216320835103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6146894 + ... + 8614925.

It is an arithmetic number, because the mean of its divisors is an integer number (580161668730).

Almost surely, 2^{18216320835104} is an apocalyptic number.

18216320835104 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18216320835104 is an abundant number, since it is smaller than the sum of its proper divisors (23555319313456).

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

18216320835104 is a wasteful number, since it uses less digits than its factorization.

18216320835104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14762630 (or 14762615 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 44.

The spelling of 18216320835104 in words is "eighteen trillion, two hundred sixteen billion, three hundred twenty million, eight hundred thirty-five thousand, one hundred four".