6520564667263 has 2 divisors, whose sum is σ = 6520564667264. Its totient is φ = 6520564667262.

The previous prime is 6520564667231. The next prime is 6520564667269. The reversal of 6520564667263 is 3627664650256.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6520564667263 - 2⁵ = 6520564667231 is a prime.

It is a super-2 number, since 2×6520564667263² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6520564667198 and 6520564667207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6520564667269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3260282333631 + 3260282333632.

It is an arithmetic number, because the mean of its divisors is an integer number (3260282333632).

Almost surely, 2^{6520564667263} is an apocalyptic number.

6520564667263 is a deficient number, since it is larger than the sum of its proper divisors (1).

6520564667263 is an equidigital number, since it uses as much as digits as its factorization.

6520564667263 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 65318400, while the sum is 58.

The spelling of 6520564667263 in words is "six trillion, five hundred twenty billion, five hundred sixty-four million, six hundred sixty-seven thousand, two hundred sixty-three".