16256317171 has 4 divisors (see below), whose sum is σ = 16256849392. Its totient is φ = 16255784952.

The previous prime is 16256317163. The next prime is 16256317213. The reversal of 16256317171 is 17171365261.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16256317171 - 2³ = 16256317163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16256317771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217311 + ... + 282376.

It is an arithmetic number, because the mean of its divisors is an integer number (4064212348).

Almost surely, 2^16256317171 is an apocalyptic number.

16256317171 is a deficient number, since it is larger than the sum of its proper divisors (532221).

16256317171 is an equidigital number, since it uses as much as digits as its factorization.

16256317171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532220.

The product of its digits is 52920, while the sum is 40.

The spelling of 16256317171 in words is "sixteen billion, two hundred fifty-six million, three hundred seventeen thousand, one hundred seventy-one".