320591843140 has 12 divisors (see below), whose sum is σ = 673242870636. Its totient is φ = 128236737248.

The previous prime is 320591843111. The next prime is 320591843179. The reversal of 320591843140 is 41348195023.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 106274696004 + 214317147136 = 325998^2 + 462944^2 .

It is a junction number, because it is equal to n+sod(n) for n = 320591843093 and 320591843102.

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, 8014796059 + ... + 8014796098.

It is an arithmetic number, because the mean of its divisors is an integer number (56103572553).

Almost surely, 2^320591843140 is an apocalyptic number.

It is an amenable number.

320591843140 is an abundant number, since it is smaller than the sum of its proper divisors (352651027496).

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

320591843140 is a wasteful number, since it uses less digits than its factorization.

320591843140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16029592166 (or 16029592164 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 320591843140 in words is "three hundred twenty billion, five hundred ninety-one million, eight hundred forty-three thousand, one hundred forty".