4320561613 has 2 divisors, whose sum is σ = 4320561614. Its totient is φ = 4320561612.

The previous prime is 4320561599. The next prime is 4320561649. The reversal of 4320561613 is 3161650234.

4320561613 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3875436009 + 445125604 = 62253^2 + 21098^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4320561613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4320562613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2160280806 + 2160280807.

It is an arithmetic number, because the mean of its divisors is an integer number (2160280807).

Almost surely, 2^4320561613 is an apocalyptic number.

It is an amenable number.

4320561613 is a deficient number, since it is larger than the sum of its proper divisors (1).

4320561613 is an equidigital number, since it uses as much as digits as its factorization.

4320561613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 4320561613 is about 65730.9790966178. The cubic root of 4320561613 is about 1628.7211433905.

The spelling of 4320561613 in words is "four billion, three hundred twenty million, five hundred sixty-one thousand, six hundred thirteen".