1563939924563 has 2 divisors, whose sum is σ = 1563939924564. Its totient is φ = 1563939924562.

The previous prime is 1563939924497. The next prime is 1563939924587. The reversal of 1563939924563 is 3654299393651.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1563939924563 - 2⁸ = 1563939924307 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1563939924563.

It is not a weakly prime, because it can be changed into another prime (1563939920563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 781969962281 + 781969962282.

It is an arithmetic number, because the mean of its divisors is an integer number (781969962282).

Almost surely, 2^{1563939924563} is an apocalyptic number.

1563939924563 is a deficient number, since it is larger than the sum of its proper divisors (1).

1563939924563 is an equidigital number, since it uses as much as digits as its factorization.

1563939924563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 141717600, while the sum is 65.

The spelling of 1563939924563 in words is "one trillion, five hundred sixty-three billion, nine hundred thirty-nine million, nine hundred twenty-four thousand, five hundred sixty-three".