2165075065 has 16 divisors (see below), whose sum is σ = 2638621440. Its totient is φ = 1705112640.

The previous prime is 2165075063. The next prime is 2165075071. The reversal of 2165075065 is 5605705612.

It is not a de Polignac number, because 2165075065 - 2¹ = 2165075063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2165075063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 253891 + ... + 262279.

It is an arithmetic number, because the mean of its divisors is an integer number (164913840).

Almost surely, 2^2165075065 is an apocalyptic number.

It is an amenable number.

2165075065 is a deficient number, since it is larger than the sum of its proper divisors (473546375).

2165075065 is an equidigital number, since it uses as much as digits as its factorization.

2165075065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9192.

The product of its (nonzero) digits is 63000, while the sum is 37.

The square root of 2165075065 is about 46530.3671272858. The cubic root of 2165075065 is about 1293.6724199398.

The spelling of 2165075065 in words is "two billion, one hundred sixty-five million, seventy-five thousand, sixty-five".