116665161 has 8 divisors (see below), whose sum is σ = 155606304. Its totient is φ = 77750400.

The previous prime is 116665151. The next prime is 116665163. The reversal of 116665161 is 161566611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 116665161 - 2⁶ = 116665097 is a prime.

It is a super-2 number, since 2×116665161² = 27221519582311842, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (116665163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8985 + ... + 17721.

It is an arithmetic number, because the mean of its divisors is an integer number (19450788).

Almost surely, 2^116665161 is an apocalyptic number.

It is an amenable number.

116665161 is a deficient number, since it is larger than the sum of its proper divisors (38941143).

116665161 is an equidigital number, since it uses as much as digits as its factorization.

116665161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13191.

The product of its digits is 6480, while the sum is 33.

The square root of 116665161 is about 10801.1647982984. The cubic root of 116665161 is about 488.6303009003.

The spelling of 116665161 in words is "one hundred sixteen million, six hundred sixty-five thousand, one hundred sixty-one".