320120946688 has 144 divisors (see below), whose sum is σ = 665885162880. Its totient is φ = 153773670400.

The previous prime is 320120946661. The next prime is 320120946689. The reversal of 320120946688 is 886649021023.

It is not an unprimeable number, because it can be changed into a prime (320120946689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 381550173 + ... + 381551011.

It is an arithmetic number, because the mean of its divisors is an integer number (4624202520).

Almost surely, 2^320120946688 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 320120946688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (332942581440).

320120946688 is an abundant number, since it is smaller than the sum of its proper divisors (345764216192).

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

320120946688 is an frugal number, since it uses more digits than its factorization.

320120946688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 985 (or 953 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 49.

The spelling of 320120946688 in words is "three hundred twenty billion, one hundred twenty million, nine hundred forty-six thousand, six hundred eighty-eight".