168279664817 has 8 divisors (see below), whose sum is σ = 183584513280. Its totient is φ = 152975932560.

The previous prime is 168279664807. The next prime is 168279664859. The reversal of 168279664817 is 718466972861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 168279664817 - 2⁴ = 168279664801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168279664807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53408 + ... + 582590.

It is an arithmetic number, because the mean of its divisors is an integer number (22948064160).

Almost surely, 2^168279664817 is an apocalyptic number.

It is an amenable number.

168279664817 is a deficient number, since it is larger than the sum of its proper divisors (15304848463).

168279664817 is a wasteful number, since it uses less digits than its factorization.

168279664817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558103.

The product of its digits is 48771072, while the sum is 65.

The spelling of 168279664817 in words is "one hundred sixty-eight billion, two hundred seventy-nine million, six hundred sixty-four thousand, eight hundred seventeen".