166111102065 has 16 divisors (see below), whose sum is σ = 272960947008. Its totient is φ = 86198193216.

The previous prime is 166111102043. The next prime is 166111102097. The reversal of 166111102065 is 560201111661.

It is not a de Polignac number, because 166111102065 - 2²² = 166106907761 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149649087 + ... + 149650196.

It is an arithmetic number, because the mean of its divisors is an integer number (17060059188).

Almost surely, 2^166111102065 is an apocalyptic number.

166111102065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

166111102065 is a deficient number, since it is larger than the sum of its proper divisors (106849844943).

166111102065 is a wasteful number, since it uses less digits than its factorization.

166111102065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299299328.

The product of its (nonzero) digits is 2160, while the sum is 30.

The spelling of 166111102065 in words is "one hundred sixty-six billion, one hundred eleven million, one hundred two thousand, sixty-five".