168368220563 has 2 divisors, whose sum is σ = 168368220564. Its totient is φ = 168368220562.

The previous prime is 168368220557. The next prime is 168368220571. The reversal of 168368220563 is 365022863861.

168368220563 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-168368220563 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (168368220523) 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, 84184110281 + 84184110282.

It is an arithmetic number, because the mean of its divisors is an integer number (84184110282).

Almost surely, 2^168368220563 is an apocalyptic number.

168368220563 is a deficient number, since it is larger than the sum of its proper divisors (1).

168368220563 is an equidigital number, since it uses as much as digits as its factorization.

168368220563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2488320, while the sum is 50.

The spelling of 168368220563 in words is "one hundred sixty-eight billion, three hundred sixty-eight million, two hundred twenty thousand, five hundred sixty-three".