8685116161 has 4 divisors (see below), whose sum is σ = 8686143232. Its totient is φ = 8684089092.

The previous prime is 8685116159. The next prime is 8685116173. The reversal of 8685116161 is 1616115868.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8685116161 - 2¹ = 8685116159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8685111161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 500745 + ... + 517798.

It is an arithmetic number, because the mean of its divisors is an integer number (2171535808).

Almost surely, 2^8685116161 is an apocalyptic number.

It is an amenable number.

8685116161 is a deficient number, since it is larger than the sum of its proper divisors (1027071).

8685116161 is a wasteful number, since it uses less digits than its factorization.

8685116161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1027070.

The product of its digits is 69120, while the sum is 43.

The square root of 8685116161 is about 93193.9706257867. The cubic root of 8685116161 is about 2055.5365830426.

The spelling of 8685116161 in words is "eight billion, six hundred eighty-five million, one hundred sixteen thousand, one hundred sixty-one".