165084007666 has 16 divisors (see below), whose sum is σ = 248199776280. Its totient is φ = 82350864000.

The previous prime is 165084007663. The next prime is 165084007691. The reversal of 165084007666 is 666700480561.

165084007666 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 164129506641 + 954501025 = 405129^2 + 30895^2 .

It is not an unprimeable number, because it can be changed into a prime (165084007663) 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, 3028000 + ... + 3082036.

Almost surely, 2^165084007666 is an apocalyptic number.

165084007666 is a deficient number, since it is larger than the sum of its proper divisors (83115768614).

165084007666 is a wasteful number, since it uses less digits than its factorization.

165084007666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57549.

The product of its (nonzero) digits is 1451520, while the sum is 49.

The spelling of 165084007666 in words is "one hundred sixty-five billion, eighty-four million, seven thousand, six hundred sixty-six".