5663944817 has 4 divisors (see below), whose sum is σ = 5732185200. Its totient is φ = 5595704436.

The previous prime is 5663944777. The next prime is 5663944823. The reversal of 5663944817 is 7184493665.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5663944817 - 2¹⁰ = 5663943793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5663944217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34120067 + ... + 34120232.

It is an arithmetic number, because the mean of its divisors is an integer number (1433046300).

Almost surely, 2^5663944817 is an apocalyptic number.

It is an amenable number.

5663944817 is a deficient number, since it is larger than the sum of its proper divisors (68240383).

5663944817 is an equidigital number, since it uses as much as digits as its factorization.

5663944817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68240382.

The product of its digits is 4354560, while the sum is 53.

The square root of 5663944817 is about 75259.1842700942. The cubic root of 5663944817 is about 1782.5415883870.

The spelling of 5663944817 in words is "five billion, six hundred sixty-three million, nine hundred forty-four thousand, eight hundred seventeen".