6561350063 has 2 divisors, whose sum is σ = 6561350064. Its totient is φ = 6561350062.

The previous prime is 6561350041. The next prime is 6561350077. The reversal of 6561350063 is 3600531656.

6561350063 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 6561350063 - 2⁸ = 6561349807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6561350963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3280675031 + 3280675032.

It is an arithmetic number, because the mean of its divisors is an integer number (3280675032).

Almost surely, 2^6561350063 is an apocalyptic number.

6561350063 is a deficient number, since it is larger than the sum of its proper divisors (1).

6561350063 is an equidigital number, since it uses as much as digits as its factorization.

6561350063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48600, while the sum is 35.

The square root of 6561350063 is about 81002.1608538933. The cubic root of 6561350063 is about 1872.1087350967.

The spelling of 6561350063 in words is "six billion, five hundred sixty-one million, three hundred fifty thousand, sixty-three".