168500857320 has 192 divisors, whose sum is σ = 553596301440. Its totient is φ = 44444736000.

The previous prime is 168500857309. The next prime is 168500857351. The reversal of 168500857320 is 23758005861.

168500857320 is a `hidden beast` number, since 1 + 6 + 8 + 50 + 0 + 8 + 573 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 54938427 + ... + 54941493.

It is an arithmetic number, because the mean of its divisors is an integer number (2883314070).

Almost surely, 2^168500857320 is an apocalyptic number.

168500857320 is a gapful number since it is divisible by the number (10) 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 168500857320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (276798150720).

168500857320 is an abundant number, since it is smaller than the sum of its proper divisors (385095444120).

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

168500857320 is a wasteful number, since it uses less digits than its factorization.

168500857320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4696 (or 4689 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

The spelling of 168500857320 in words is "one hundred sixty-eight billion, five hundred million, eight hundred fifty-seven thousand, three hundred twenty".