165616160517 has 20 divisors (see below), whose sum is σ = 247413307680. Its totient is φ = 110405691144.

The previous prime is 165616160497. The next prime is 165616160527. The reversal of 165616160517 is 715061616561.

165616160517 is a `hidden beast` number, since 1 + 6 + 5 + 616 + 16 + 0 + 5 + 17 = 666.

It is not a de Polignac number, because 165616160517 - 2⁷ = 165616160389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165616160527) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2725488 + ... + 2785590.

It is an arithmetic number, because the mean of its divisors is an integer number (12370665384).

Almost surely, 2^165616160517 is an apocalyptic number.

It is an amenable number.

165616160517 is a deficient number, since it is larger than the sum of its proper divisors (81797147163).

165616160517 is an equidigital number, since it uses as much as digits as its factorization.

165616160517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94134 (or 94125 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 45.

The spelling of 165616160517 in words is "one hundred sixty-five billion, six hundred sixteen million, one hundred sixty thousand, five hundred seventeen".