320560633513 has 2 divisors, whose sum is σ = 320560633514. Its totient is φ = 320560633512.

The previous prime is 320560633493. The next prime is 320560633537. The reversal of 320560633513 is 315336065023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 316200408489 + 4360225024 = 562317^2 + 66032^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320560633513 is a prime.

It is not a weakly prime, because it can be changed into another prime (320560631513) by changing a digit.

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 as a sum of consecutive naturals, namely, 160280316756 + 160280316757.

It is an arithmetic number, because the mean of its divisors is an integer number (160280316757).

Almost surely, 2^320560633513 is an apocalyptic number.

It is an amenable number.

320560633513 is a deficient number, since it is larger than the sum of its proper divisors (1).

320560633513 is an equidigital number, since it uses as much as digits as its factorization.

320560633513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145800, while the sum is 37.

Adding to 320560633513 its reverse (315336065023), we get a palindrome (635896698536).

The spelling of 320560633513 in words is "three hundred twenty billion, five hundred sixty million, six hundred thirty-three thousand, five hundred thirteen".