168726285828 has 36 divisors (see below), whose sum is σ = 426628713420. Its totient is φ = 56225459136.

The previous prime is 168726285743. The next prime is 168726285839. The reversal of 168726285828 is 828582627861.

168726285828 is a `hidden beast` number, since 1 + 6 + 8 + 7 + 26 + 28 + 582 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 101877149124 + 66849136704 = 319182^2 + 258552^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a hoax number, since the sum of its digits (63) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 569475 + ... + 813482.

It is an arithmetic number, because the mean of its divisors is an integer number (11850797595).

Almost surely, 2^168726285828 is an apocalyptic number.

168726285828 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

168726285828 is an abundant number, since it is smaller than the sum of its proper divisors (257902427592).

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

168726285828 is a wasteful number, since it uses less digits than its factorization.

168726285828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1386356 (or 1386351 counting only the distinct ones).

The product of its digits is 41287680, while the sum is 63.

The spelling of 168726285828 in words is "one hundred sixty-eight billion, seven hundred twenty-six million, two hundred eighty-five thousand, eight hundred twenty-eight".