3668563806563 has 2 divisors, whose sum is σ = 3668563806564. Its totient is φ = 3668563806562.

The previous prime is 3668563806559. The next prime is 3668563806629. The reversal of 3668563806563 is 3656083658663.

3668563806563 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3668563806563 - 2² = 3668563806559 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3668563806563.

It is not a weakly prime, because it can be changed into another prime (3668563806503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1834281903281 + 1834281903282.

It is an arithmetic number, because the mean of its divisors is an integer number (1834281903282).

Almost surely, 2^{3668563806563} is an apocalyptic number.

3668563806563 is a deficient number, since it is larger than the sum of its proper divisors (1).

3668563806563 is an equidigital number, since it uses as much as digits as its factorization.

3668563806563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 335923200, while the sum is 65.

The spelling of 3668563806563 in words is "three trillion, six hundred sixty-eight billion, five hundred sixty-three million, eight hundred six thousand, five hundred sixty-three".