168701381824 has 224 divisors, whose sum is σ = 375910571520. Its totient is φ = 74749796352.

The previous prime is 168701381789. The next prime is 168701381837. The reversal of 168701381824 is 428183107861.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 369149404 + ... + 369149860.

Almost surely, 2^168701381824 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 168701381824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187955285760).

168701381824 is an abundant number, since it is smaller than the sum of its proper divisors (207209189696).

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

168701381824 is a wasteful number, since it uses less digits than its factorization.

168701381824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775 (or 765 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 49.

The spelling of 168701381824 in words is "one hundred sixty-eight billion, seven hundred one million, three hundred eighty-one thousand, eight hundred twenty-four".