320133520345 has 4 divisors (see below), whose sum is σ = 384160224420. Its totient is φ = 256106816272.

The previous prime is 320133520283. The next prime is 320133520351. The reversal of 320133520345 is 543025331023.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 241521136704 + 78612383641 = 491448^2 + 280379^2 .

It is a cyclic number.

It is not a de Polignac number, because 320133520345 - 2²³ = 320125131737 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32013352030 + ... + 32013352039.

It is an arithmetic number, because the mean of its divisors is an integer number (96040056105).

Almost surely, 2^320133520345 is an apocalyptic number.

It is an amenable number.

320133520345 is a deficient number, since it is larger than the sum of its proper divisors (64026704075).

320133520345 is an equidigital number, since it uses as much as digits as its factorization.

320133520345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64026704074.

The product of its (nonzero) digits is 32400, while the sum is 31.

Adding to 320133520345 its reverse (543025331023), we get a palindrome (863158851368).

The spelling of 320133520345 in words is "three hundred twenty billion, one hundred thirty-three million, five hundred twenty thousand, three hundred forty-five".