168863315328 has 320 divisors, whose sum is σ = 532930028400. Its totient is φ = 52927561728.

The previous prime is 168863315323. The next prime is 168863315333. The reversal of 168863315328 is 823513368861.

168863315328 is a `hidden beast` number, since 16 + 8 + 8 + 63 + 31 + 532 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (168863315323) and next prime (168863315333).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168863315323) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 26984776 + ... + 26991032.

Almost surely, 2^168863315328 is an apocalyptic number.

168863315328 is a gapful number since it is divisible by the number (18) 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 168863315328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (266465014200).

168863315328 is an abundant number, since it is smaller than the sum of its proper divisors (364066713072).

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

168863315328 is a wasteful number, since it uses less digits than its factorization.

168863315328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6439 (or 6418 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 54.

The spelling of 168863315328 in words is "one hundred sixty-eight billion, eight hundred sixty-three million, three hundred fifteen thousand, three hundred twenty-eight".