320846343489 has 135 divisors (see below), whose sum is σ = 575383956147. Its totient is φ = 178385611824.

The previous prime is 320846343479. The next prime is 320846343523. The reversal of 320846343489 is 984343648023.

The square root of 320846343489 is 566433.

It is a perfect power (a square), and thus also a powerful number.

320846343489 is a `hidden beast` number, since 3 + 20 + 84 + 63 + 4 + 3 + 489 = 666.

It can be written as a sum of positive squares in only one way, i.e., 287097714225 + 33748629264 = 535815^2 + 183708^2 .

It is not a de Polignac number, because 320846343489 - 2²⁷ = 320712125761 is a prime.

It is a super-2 number, since 2×320846343489² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (320846343409) by changing a digit.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 8671522779 + ... + 8671522815.

Almost surely, 2^320846343489 is an apocalyptic number.

320846343489 is the 566433-rd square number.

320846343489 is the 283217-th centered octagonal number.

It is an amenable number.

320846343489 is a deficient number, since it is larger than the sum of its proper divisors (254537612658).

320846343489 is an frugal number, since it uses more digits than its factorization.

320846343489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130 (or 47 counting only the distinct ones).

The product of its (nonzero) digits is 11943936, while the sum is 54.

The spelling of 320846343489 in words is "three hundred twenty billion, eight hundred forty-six million, three hundred forty-three thousand, four hundred eighty-nine".