165016666685 has 16 divisors (see below), whose sum is σ = 213287966976. Its totient is φ = 121838084928.

The previous prime is 165016666681. The next prime is 165016666691. The reversal of 165016666685 is 586666610561.

It is a cyclic number.

It is not a de Polignac number, because 165016666685 - 2² = 165016666681 is a prime.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 165016666685.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165016666681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185132 + ... + 603578.

It is an arithmetic number, because the mean of its divisors is an integer number (13330497936).

Almost surely, 2^165016666685 is an apocalyptic number.

It is an amenable number.

165016666685 is a deficient number, since it is larger than the sum of its proper divisors (48271300291).

165016666685 is a wasteful number, since it uses less digits than its factorization.

165016666685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424532.

The product of its (nonzero) digits is 9331200, while the sum is 56.

The spelling of 165016666685 in words is "one hundred sixty-five billion, sixteen million, six hundred sixty-six thousand, six hundred eighty-five".