1563445164223 has 2 divisors, whose sum is σ = 1563445164224. Its totient is φ = 1563445164222.

The previous prime is 1563445164199. The next prime is 1563445164269. The reversal of 1563445164223 is 3224615443651.

It is an a-pointer prime, because the next prime (1563445164269) can be obtained adding 1563445164223 to its sum of digits (46).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1563445164223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1563445164623) 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, 781722582111 + 781722582112.

It is an arithmetic number, because the mean of its divisors is an integer number (781722582112).

Almost surely, 2^{1563445164223} is an apocalyptic number.

1563445164223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1563445164223 is an equidigital number, since it uses as much as digits as its factorization.

1563445164223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2073600, while the sum is 46.

The spelling of 1563445164223 in words is "one trillion, five hundred sixty-three billion, four hundred forty-five million, one hundred sixty-four thousand, two hundred twenty-three".