165274868517 has 16 divisors (see below), whose sum is σ = 241645412928. Its totient is φ = 99647585280.

The previous prime is 165274868489. The next prime is 165274868557. The reversal of 165274868517 is 715868472561.

It is not a de Polignac number, because 165274868517 - 2¹¹ = 165274866469 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165274868557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12968578 + ... + 12981315.

It is an arithmetic number, because the mean of its divisors is an integer number (15102838308).

Almost surely, 2^165274868517 is an apocalyptic number.

It is an amenable number.

165274868517 is a deficient number, since it is larger than the sum of its proper divisors (76370544411).

165274868517 is a wasteful number, since it uses less digits than its factorization.

165274868517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25950100.

The product of its digits is 22579200, while the sum is 60.

The spelling of 165274868517 in words is "one hundred sixty-five billion, two hundred seventy-four million, eight hundred sixty-eight thousand, five hundred seventeen".