320833689140 has 48 divisors (see below), whose sum is σ = 697636875600. Its totient is φ = 123792033792.

The previous prime is 320833689101. The next prime is 320833689223. The reversal of 320833689140 is 41986338023.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 58972236964 + 261861452176 = 242842^2 + 511724^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 361292 + ... + 878748.

It is an arithmetic number, because the mean of its divisors is an integer number (14534101575).

Almost surely, 2^320833689140 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 320833689140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (348818437800).

320833689140 is an abundant number, since it is smaller than the sum of its proper divisors (376803186460).

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

320833689140 is a wasteful number, since it uses less digits than its factorization.

320833689140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518564 (or 518562 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 47.

The spelling of 320833689140 in words is "three hundred twenty billion, eight hundred thirty-three million, six hundred eighty-nine thousand, one hundred forty".