165160065 has 32 divisors (see below), whose sum is σ = 317905920. Its totient is φ = 71527104.

The previous prime is 165160019. The next prime is 165160097. The reversal of 165160065 is 560061561.

It is not a de Polignac number, because 165160065 - 2⁷ = 165159937 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39399 + ... + 43388.

It is an arithmetic number, because the mean of its divisors is an integer number (9934560).

Almost surely, 2^165160065 is an apocalyptic number.

165160065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

165160065 is a deficient number, since it is larger than the sum of its proper divisors (152745855).

165160065 is a wasteful number, since it uses less digits than its factorization.

165160065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82821.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 165160065 is about 12851.4615900294. The cubic root of 165160065 is about 548.6579566220.

It can be divided in two parts, 1651 and 60065, that added together give a palindrome (61716).

The spelling of 165160065 in words is "one hundred sixty-five million, one hundred sixty thousand, sixty-five".