165361446065 has 16 divisors (see below), whose sum is σ = 200151046656. Its totient is φ = 131146329600.

The previous prime is 165361446031. The next prime is 165361446091. The reversal of 165361446065 is 560644163561.

It is not a de Polignac number, because 165361446065 - 2¹⁸ = 165361183921 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 521729 + ... + 776481.

It is an arithmetic number, because the mean of its divisors is an integer number (12509440416).

Almost surely, 2^165361446065 is an apocalyptic number.

It is an amenable number.

165361446065 is a deficient number, since it is larger than the sum of its proper divisors (34789600591).

165361446065 is a wasteful number, since it uses less digits than its factorization.

165361446065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255880.

The product of its (nonzero) digits is 1555200, while the sum is 47.

The spelling of 165361446065 in words is "one hundred sixty-five billion, three hundred sixty-one million, four hundred forty-six thousand, sixty-five".