168319189116 has 144 divisors (see below), whose sum is σ = 474656626080. Its totient is φ = 49959106560.

The previous prime is 168319189079. The next prime is 168319189117. The reversal of 168319189116 is 611981913861.

It is a happy number.

It is a super-3 number, since 3×168319189116³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168319189117) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1658451 + ... + 1757013.

It is an arithmetic number, because the mean of its divisors is an integer number (3296226570).

Almost surely, 2^168319189116 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 168319189116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237328313040).

168319189116 is an abundant number, since it is smaller than the sum of its proper divisors (306337436964).

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

168319189116 is a wasteful number, since it uses less digits than its factorization.

168319189116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98716 (or 98711 counting only the distinct ones).

The product of its digits is 559872, while the sum is 54.

It can be divided in two parts, 168319 and 189116, that added together give a triangular number (357435 = T₈₄₅).

The spelling of 168319189116 in words is "one hundred sixty-eight billion, three hundred nineteen million, one hundred eighty-nine thousand, one hundred sixteen".