1563863248609 has 2 divisors, whose sum is σ = 1563863248610. Its totient is φ = 1563863248608.

The previous prime is 1563863248531. The next prime is 1563863248613. The reversal of 1563863248609 is 9068423683651.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1563862797025 + 451584 = 1250545^2 + 672^2 .

It is an emirp because it is prime and its reverse (9068423683651) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1563863248609 - 2¹³ = 1563863240417 is a prime.

It is not a weakly prime, because it can be changed into another prime (1563863248699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 781931624304 + 781931624305.

It is an arithmetic number, because the mean of its divisors is an integer number (781931624305).

Almost surely, 2^{1563863248609} is an apocalyptic number.

It is an amenable number.

1563863248609 is a deficient number, since it is larger than the sum of its proper divisors (1).

1563863248609 is an equidigital number, since it uses as much as digits as its factorization.

1563863248609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 44789760, while the sum is 61.

The spelling of 1563863248609 in words is "one trillion, five hundred sixty-three billion, eight hundred sixty-three million, two hundred forty-eight thousand, six hundred nine".