12534565520563 has 2 divisors, whose sum is σ = 12534565520564. Its totient is φ = 12534565520562.

The previous prime is 12534565520551. The next prime is 12534565520591. The reversal of 12534565520563 is 36502556543521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12534565520563 - 2⁴¹ = 10335542265011 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12534565520563.

It is not a weakly prime, because it can be changed into another prime (12534565520263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6267282760281 + 6267282760282.

It is an arithmetic number, because the mean of its divisors is an integer number (6267282760282).

Almost surely, 2^{12534565520563} is an apocalyptic number.

12534565520563 is a deficient number, since it is larger than the sum of its proper divisors (1).

12534565520563 is an equidigital number, since it uses as much as digits as its factorization.

12534565520563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16200000, while the sum is 52.

The spelling of 12534565520563 in words is "twelve trillion, five hundred thirty-four billion, five hundred sixty-five million, five hundred twenty thousand, five hundred sixty-three".