168668376732 has 96 divisors (see below), whose sum is σ = 457241164800. Its totient is φ = 53667510336.

The previous prime is 168668376659. The next prime is 168668376761. The reversal of 168668376732 is 237673866861.

It is a self number, because there is not a number n which added to its sum of digits gives 168668376732.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1139994 + ... + 1279422.

It is an arithmetic number, because the mean of its divisors is an integer number (4762928800).

Almost surely, 2^168668376732 is an apocalyptic number.

168668376732 is a gapful number since it is divisible by the number (12) 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 168668376732, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (228620582400).

168668376732 is an abundant number, since it is smaller than the sum of its proper divisors (288572788068).

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

168668376732 is a wasteful number, since it uses less digits than its factorization.

168668376732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139952 (or 139944 counting only the distinct ones).

The product of its digits is 73156608, while the sum is 63.

The spelling of 168668376732 in words is "one hundred sixty-eight billion, six hundred sixty-eight million, three hundred seventy-six thousand, seven hundred thirty-two".