165441130565 has 16 divisors (see below), whose sum is σ = 199148636016. Its totient is φ = 131940364800.

The previous prime is 165441130529. The next prime is 165441130597. The reversal of 165441130565 is 565031144561.

It can be written as a sum of positive squares in 8 ways, for example, as 2986185316 + 162454945249 = 54646^2 + 403057^2 .

It is a de Polignac number, because none of the positive numbers 2^k-165441130565 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4534295 + ... + 4570635.

It is an arithmetic number, because the mean of its divisors is an integer number (12446789751).

Almost surely, 2^165441130565 is an apocalyptic number.

It is an amenable number.

165441130565 is a deficient number, since it is larger than the sum of its proper divisors (33707505451).

165441130565 is a wasteful number, since it uses less digits than its factorization.

165441130565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39160.

The product of its (nonzero) digits is 216000, while the sum is 41.

The spelling of 165441130565 in words is "one hundred sixty-five billion, four hundred forty-one million, one hundred thirty thousand, five hundred sixty-five".