168451208064 has 768 divisors, whose sum is σ = 585434304000. Its totient is φ = 47889211392.

The previous prime is 168451208033. The next prime is 168451208089. The reversal of 168451208064 is 460802154861.

It is a happy number.

168451208064 is a `hidden beast` number, since 1 + 68 + 451 + 2 + 0 + 80 + 64 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 7323965557 + ... + 7323965579.

It is an arithmetic number, because the mean of its divisors is an integer number (762284250).

Almost surely, 2^168451208064 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 168451208064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (292717152000).

168451208064 is an abundant number, since it is smaller than the sum of its proper divisors (416983095936).

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

168451208064 is an frugal number, since it uses more digits than its factorization.

168451208064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106 (or 64 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 45.

The spelling of 168451208064 in words is "one hundred sixty-eight billion, four hundred fifty-one million, two hundred eight thousand, sixty-four".