168308818552 has 64 divisors (see below), whose sum is σ = 369116280000. Its totient is φ = 71917913088.

The previous prime is 168308818547. The next prime is 168308818627. The reversal of 168308818552 is 255818803861.

It is a junction number, because it is equal to n+sod(n) for n = 168308818493 and 168308818502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 833724 + ... + 1015732.

It is an arithmetic number, because the mean of its divisors is an integer number (5767441875).

Almost surely, 2^168308818552 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 168308818552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (184558140000).

168308818552 is an abundant number, since it is smaller than the sum of its proper divisors (200807461448).

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

168308818552 is a wasteful number, since it uses less digits than its factorization.

168308818552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182373 (or 182355 counting only the distinct ones).

The product of its (nonzero) digits is 3686400, while the sum is 55.

The spelling of 168308818552 in words is "one hundred sixty-eight billion, three hundred eight million, eight hundred eighteen thousand, five hundred fifty-two".