13500320563 has 2 divisors, whose sum is σ = 13500320564. Its totient is φ = 13500320562.

The previous prime is 13500320539. The next prime is 13500320567. The reversal of 13500320563 is 36502300531.

13500320563 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13500320563 - 2⁵ = 13500320531 is a prime.

It is not a weakly prime, because it can be changed into another prime (13500320567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6750160281 + 6750160282.

It is an arithmetic number, because the mean of its divisors is an integer number (6750160282).

Almost surely, 2^13500320563 is an apocalyptic number.

13500320563 is a deficient number, since it is larger than the sum of its proper divisors (1).

13500320563 is an equidigital number, since it uses as much as digits as its factorization.

13500320563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8100, while the sum is 28.

The spelling of 13500320563 in words is "thirteen billion, five hundred million, three hundred twenty thousand, five hundred sixty-three".