18116518633320 has 128 divisors (see below), whose sum is σ = 56469199248000. Its totient is φ = 4644113832960.

The previous prime is 18116518633309. The next prime is 18116518633333. The reversal of 18116518633320 is 2333681561181.

It is a super-2 number, since 2×18116518633320² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18116518633320.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10569666 + ... + 12163505.

It is an arithmetic number, because the mean of its divisors is an integer number (441165619125).

Almost surely, 2^{18116518633320} is an apocalyptic number.

18116518633320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18116518633320 is an abundant number, since it is smaller than the sum of its proper divisors (38352680614680).

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

18116518633320 is a wasteful number, since it uses less digits than its factorization.

18116518633320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22733443 (or 22733439 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 48.

The spelling of 18116518633320 in words is "eighteen trillion, one hundred sixteen billion, five hundred eighteen million, six hundred thirty-three thousand, three hundred twenty".