171712065161 has 16 divisors (see below), whose sum is σ = 214314524928. Its totient is φ = 133946568000.

The previous prime is 171712065143. The next prime is 171712065181. The reversal of 171712065161 is 161560217171.

It is a de Polignac number, because none of the positive numbers 2^k-171712065161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (171712065131) 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, 13281890 + ... + 13294811.

It is an arithmetic number, because the mean of its divisors is an integer number (13394657808).

Almost surely, 2^171712065161 is an apocalyptic number.

It is an amenable number.

171712065161 is a deficient number, since it is larger than the sum of its proper divisors (42602459767).

171712065161 is a wasteful number, since it uses less digits than its factorization.

171712065161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26576792.

The product of its (nonzero) digits is 17640, while the sum is 38.

The spelling of 171712065161 in words is "one hundred seventy-one billion, seven hundred twelve million, sixty-five thousand, one hundred sixty-one".