171701555161 has 24 divisors (see below), whose sum is σ = 180307711584. Its totient is φ = 163491514560.

The previous prime is 171701555159. The next prime is 171701555171. The reversal of 171701555161 is 161555107171.

It is not a de Polignac number, because 171701555161 - 2¹ = 171701555159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (171701555141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 200351445 + ... + 200352301.

It is an arithmetic number, because the mean of its divisors is an integer number (7512821316).

Almost surely, 2^171701555161 is an apocalyptic number.

It is an amenable number.

171701555161 is a deficient number, since it is larger than the sum of its proper divisors (8606156423).

171701555161 is an equidigital number, since it uses as much as digits as its factorization.

171701555161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2181 (or 2158 counting only the distinct ones).

The product of its (nonzero) digits is 36750, while the sum is 40.

The spelling of 171701555161 in words is "one hundred seventy-one billion, seven hundred one million, five hundred fifty-five thousand, one hundred sixty-one".