165213200164565 has 32 divisors (see below), whose sum is σ = 226949794016256. Its totient is φ = 113103243889920.

The previous prime is 165213200164487. The next prime is 165213200164603. The reversal of 165213200164565 is 565461002312561.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-165213200164565 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 212002580 + ... + 212780450.

It is an arithmetic number, because the mean of its divisors is an integer number (7092181063008).

Almost surely, 2^{165213200164565} is an apocalyptic number.

It is an amenable number.

165213200164565 is a deficient number, since it is larger than the sum of its proper divisors (61736593851691).

165213200164565 is an equidigital number, since it uses as much as digits as its factorization.

165213200164565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 787829.

The product of its (nonzero) digits is 1296000, while the sum is 47.

The spelling of 165213200164565 in words is "one hundred sixty-five trillion, two hundred thirteen billion, two hundred million, one hundred sixty-four thousand, five hundred sixty-five".