163456617171 has 16 divisors (see below), whose sum is σ = 218670251904. Its totient is φ = 108607344384.

The previous prime is 163456617157. The next prime is 163456617187. The reversal of 163456617171 is 171716654361.

It is not a de Polignac number, because 163456617171 - 2²³ = 163448228563 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 163456617171.

It is not an unprimeable number, because it can be changed into a prime (163456617151) 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, 2108520 + ... + 2184666.

It is an arithmetic number, because the mean of its divisors is an integer number (13666890744).

Almost surely, 2^163456617171 is an apocalyptic number.

163456617171 is a deficient number, since it is larger than the sum of its proper divisors (55213634733).

163456617171 is a wasteful number, since it uses less digits than its factorization.

163456617171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78530.

The product of its digits is 635040, while the sum is 48.

The spelling of 163456617171 in words is "one hundred sixty-three billion, four hundred fifty-six million, six hundred seventeen thousand, one hundred seventy-one".