168279664816 has 60 divisors (see below), whose sum is σ = 345447088632. Its totient is φ = 79400558592.

The previous prime is 168279664807. The next prime is 168279664859. The reversal of 168279664816 is 618466972861.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1427751 + ... + 1541113.

Almost surely, 2^168279664816 is an apocalyptic number.

168279664816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 168279664816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (172723544316).

168279664816 is an abundant number, since it is smaller than the sum of its proper divisors (177167423816).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

168279664816 is a wasteful number, since it uses less digits than its factorization.

168279664816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113666 (or 113641 counting only the distinct ones).

The product of its digits is 41803776, while the sum is 64.

The spelling of 168279664816 in words is "one hundred sixty-eight billion, two hundred seventy-nine million, six hundred sixty-four thousand, eight hundred sixteen".