161710017161 has 16 divisors (see below), whose sum is σ = 205902120960. Its totient is φ = 123326785680.

The previous prime is 161710017103. The next prime is 161710017169.

It is a happy number.

161710017161 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 161710017161 - 2²² = 161705822857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161710017169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22338191 + ... + 22345428.

It is an arithmetic number, because the mean of its divisors is an integer number (12868882560).

Almost surely, 2^161710017161 is an apocalyptic number.

161710017161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

161710017161 is a deficient number, since it is larger than the sum of its proper divisors (44192103799).

161710017161 is a wasteful number, since it uses less digits than its factorization.

161710017161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44683684.

The product of its (nonzero) digits is 1764, while the sum is 32.

The spelling of 161710017161 in words is "one hundred sixty-one billion, seven hundred ten million, seventeen thousand, one hundred sixty-one".