9116991616185 has 16 divisors (see below), whose sum is σ = 16207985095680. Its totient is φ = 4862395528560.

The previous prime is 9116991616181. The next prime is 9116991616217. The reversal of 9116991616185 is 5816161996119.

9116991616185 is a `hidden beast` number, since 9 + 1 + 1 + 6 + 9 + 9 + 1 + 6 + 1 + 618 + 5 = 666.

It is not a de Polignac number, because 9116991616185 - 2² = 9116991616181 is a prime.

It is a super-2 number, since 2×9116991616185² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9116991616181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33766635481 + ... + 33766635750.

It is an arithmetic number, because the mean of its divisors is an integer number (1012999068480).

Almost surely, 2^{9116991616185} is an apocalyptic number.

It is an amenable number.

9116991616185 is a deficient number, since it is larger than the sum of its proper divisors (7090993479495).

9116991616185 is a wasteful number, since it uses less digits than its factorization.

9116991616185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67533271245 (or 67533271239 counting only the distinct ones).

The product of its digits is 6298560, while the sum is 63.

The spelling of 9116991616185 in words is "nine trillion, one hundred sixteen billion, nine hundred ninety-one million, six hundred sixteen thousand, one hundred eighty-five".