320840647936 has 36 divisors (see below), whose sum is σ = 641914144704. Its totient is φ = 160048064000.

The previous prime is 320840647921. The next prime is 320840647949. The reversal of 320840647936 is 639746048023.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1343590 + ... + 1564261.

It is an arithmetic number, because the mean of its divisors is an integer number (17830948464).

Almost surely, 2^320840647936 is an apocalyptic number.

It is an amenable number.

320840647936 is an abundant number, since it is smaller than the sum of its proper divisors (321073496768).

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

320840647936 is an equidigital number, since it uses as much as digits as its factorization.

320840647936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2908298 (or 2908284 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 52.

The spelling of 320840647936 in words is "three hundred twenty billion, eight hundred forty million, six hundred forty-seven thousand, nine hundred thirty-six".