320887170000 has 250 divisors, whose sum is σ = 1160557141898. Its totient is φ = 85569696000.

The previous prime is 320887169989. The next prime is 320887170077. The reversal of 320887170000 is 71788023.

It can be written as a sum of positive squares in 5 ways, for example, as 64762106256 + 256125063744 = 254484^2 + 506088^2 .

It is a tau number, because it is divible by the number of its divisors (250).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 49 ways as a sum of consecutive naturals, for example, 611922 + ... + 1008078.

Almost surely, 2^320887170000 is an apocalyptic number.

320887170000 is a gapful number since it is divisible by the number (30) 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 320887170000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (580278570949).

320887170000 is an abundant number, since it is smaller than the sum of its proper divisors (839669971898).

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

320887170000 is an equidigital number, since it uses as much as digits as its factorization.

320887170000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396197 (or 396167 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The spelling of 320887170000 in words is "three hundred twenty billion, eight hundred eighty-seven million, one hundred seventy thousand".