320681843960 has 32 divisors (see below), whose sum is σ = 763977335760. Its totient is φ = 120727282176.

The previous prime is 320681843959. The next prime is 320681843981. The reversal of 320681843960 is 69348186023.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 320681843899 and 320681843908.

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 7 ways as a sum of consecutive naturals, for example, 235794794 + ... + 235796153.

Almost surely, 2^320681843960 is an apocalyptic number.

It is an amenable number.

320681843960 is an abundant number, since it is smaller than the sum of its proper divisors (443295491800).

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

320681843960 is a wasteful number, since it uses less digits than its factorization.

320681843960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471590975 (or 471590971 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 50.

The spelling of 320681843960 in words is "three hundred twenty billion, six hundred eighty-one million, eight hundred forty-three thousand, nine hundred sixty".