165361715353 has 4 divisors (see below), whose sum is σ = 165379435060. Its totient is φ = 165343995648.

The previous prime is 165361715317. The next prime is 165361715381. The reversal of 165361715353 is 353517163561.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 353517163561 = 2269 ⋅155803069.

It can be written as a sum of positive squares in 2 ways, for example, as 123560686144 + 41801029209 = 351512^2 + 204453^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165361715353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165361716353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8845848 + ... + 8864521.

It is an arithmetic number, because the mean of its divisors is an integer number (41344858765).

Almost surely, 2^165361715353 is an apocalyptic number.

It is an amenable number.

165361715353 is a deficient number, since it is larger than the sum of its proper divisors (17719707).

165361715353 is an equidigital number, since it uses as much as digits as its factorization.

165361715353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17719706.

The product of its digits is 850500, while the sum is 46.

The spelling of 165361715353 in words is "one hundred sixty-five billion, three hundred sixty-one million, seven hundred fifteen thousand, three hundred fifty-three".