165616116166 has 4 divisors (see below), whose sum is σ = 248424174252. Its totient is φ = 82808058082.

The previous prime is 165616116163. The next prime is 165616116217. The reversal of 165616116166 is 661611616561.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165616116163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41404029040 + ... + 41404029043.

It is an arithmetic number, because the mean of its divisors is an integer number (62106043563).

Almost surely, 2^165616116166 is an apocalyptic number.

165616116166 is a deficient number, since it is larger than the sum of its proper divisors (82808058086).

165616116166 is an equidigital number, since it uses as much as digits as its factorization.

165616116166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82808058085.

The product of its digits is 233280, while the sum is 46.

The spelling of 165616116166 in words is "one hundred sixty-five billion, six hundred sixteen million, one hundred sixteen thousand, one hundred sixty-six".