165084007665 has 16 divisors (see below), whose sum is σ = 269754294528. Its totient is φ = 86171510016.

The previous prime is 165084007663. The next prime is 165084007691. The reversal of 165084007665 is 566700480561.

It is not a de Polignac number, because 165084007665 - 2¹ = 165084007663 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 117080152 + ... + 117081561.

It is an arithmetic number, because the mean of its divisors is an integer number (16859643408).

Almost surely, 2^165084007665 is an apocalyptic number.

165084007665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

165084007665 is a deficient number, since it is larger than the sum of its proper divisors (104670286863).

165084007665 is a wasteful number, since it uses less digits than its factorization.

165084007665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234161768.

The product of its (nonzero) digits is 1209600, while the sum is 48.

The spelling of 165084007665 in words is "one hundred sixty-five billion, eighty-four million, seven thousand, six hundred sixty-five".