320328721206208 has 112 divisors (see below), whose sum is σ = 746978970941280. Its totient is φ = 134367908659200.

The previous prime is 320328721206121. The next prime is 320328721206211. The reversal of 320328721206208 is 802602127823023.

It is a super-3 number, since 3×320328721206208³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29767528 + ... + 39073816.

It is an arithmetic number, because the mean of its divisors is an integer number (6669455097690).

Almost surely, 2^{320328721206208} 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 320328721206208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (373489485470640).

320328721206208 is an abundant number, since it is smaller than the sum of its proper divisors (426650249735072).

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

320328721206208 is a wasteful number, since it uses less digits than its factorization.

320328721206208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9310086 (or 9310076 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 46.

The spelling of 320328721206208 in words is "three hundred twenty trillion, three hundred twenty-eight billion, seven hundred twenty-one million, two hundred six thousand, two hundred eight".