165050166105601 has 24 divisors (see below), whose sum is σ = 192488459184000. Its totient is φ = 141109656567264.

The previous prime is 165050166105581. The next prime is 165050166105607. The reversal of 165050166105601 is 106501661050561.

It is not a de Polignac number, because 165050166105601 - 2¹⁵ = 165050166072833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (165050166105607) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 119192115 + ... + 120568903.

It is an arithmetic number, because the mean of its divisors is an integer number (8020352466000).

Almost surely, 2^{165050166105601} is an apocalyptic number.

It is an amenable number.

165050166105601 is a deficient number, since it is larger than the sum of its proper divisors (27438293078399).

165050166105601 is a wasteful number, since it uses less digits than its factorization.

165050166105601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1383061 (or 1383054 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 43.

The spelling of 165050166105601 in words is "one hundred sixty-five trillion, fifty billion, one hundred sixty-six million, one hundred five thousand, six hundred one".