166285750161 has 8 divisors (see below), whose sum is σ = 221836767264. Its totient is φ = 110795949920.

The previous prime is 166285750157. The next prime is 166285750187. The reversal of 166285750161 is 161057582661.

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

It is a cyclic number.

It is not a de Polignac number, because 166285750161 - 2² = 166285750157 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 166285750161.

It is not an unprimeable number, because it can be changed into a prime (166285750061) 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, 15297876 + ... + 15308741.

It is an arithmetic number, because the mean of its divisors is an integer number (27729595908).

Almost surely, 2^166285750161 is an apocalyptic number.

It is an amenable number.

166285750161 is a deficient number, since it is larger than the sum of its proper divisors (55551017103).

166285750161 is a wasteful number, since it uses less digits than its factorization.

166285750161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30608431.

The product of its (nonzero) digits is 604800, while the sum is 48.

The spelling of 166285750161 in words is "one hundred sixty-six billion, two hundred eighty-five million, seven hundred fifty thousand, one hundred sixty-one".