116866161 has 6 divisors (see below), whose sum is σ = 168806690. Its totient is φ = 77910768.

The previous prime is 116866153. The next prime is 116866163. The reversal of 116866161 is 161668611.

It can be written as a sum of positive squares in only one way, i.e., 111830625 + 5035536 = 10575^2 + 2244^2 .

It is not a de Polignac number, because 116866161 - 2³ = 116866153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (116866163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6492556 + ... + 6492573.

Almost surely, 2^116866161 is an apocalyptic number.

It is an amenable number.

116866161 is a deficient number, since it is larger than the sum of its proper divisors (51940529).

116866161 is a wasteful number, since it uses less digits than its factorization.

116866161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12985135 (or 12985132 counting only the distinct ones).

The product of its digits is 10368, while the sum is 36.

The square root of 116866161 is about 10810.4653461357. The cubic root of 116866161 is about 488.9107569209.

The spelling of 116866161 in words is "one hundred sixteen million, eight hundred sixty-six thousand, one hundred sixty-one".