6503645063 has 2 divisors, whose sum is σ = 6503645064. Its totient is φ = 6503645062.

The previous prime is 6503645041. The next prime is 6503645081. The reversal of 6503645063 is 3605463056.

It is a happy number.

6503645063 is digitally balanced in base 3, 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 6503645063 - 2¹⁴ = 6503628679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6503645963) 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, 3251822531 + 3251822532.

It is an arithmetic number, because the mean of its divisors is an integer number (3251822532).

Almost surely, 2^6503645063 is an apocalyptic number.

6503645063 is a deficient number, since it is larger than the sum of its proper divisors (1).

6503645063 is an equidigital number, since it uses as much as digits as its factorization.

6503645063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 194400, while the sum is 38.

The square root of 6503645063 is about 80645.1800357591. The cubic root of 6503645063 is about 1866.6043654837.

The spelling of 6503645063 in words is "six billion, five hundred three million, six hundred forty-five thousand, sixty-three".