5663243549 has 4 divisors (see below), whose sum is σ = 5680048764. Its totient is φ = 5646438336.

The previous prime is 5663243543. The next prime is 5663243557. The reversal of 5663243549 is 9453423665.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1278420025 + 4384823524 = 35755^2 + 66218^2 .

It is a cyclic number.

It is not a de Polignac number, because 5663243549 - 2²⁰ = 5662194973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5663243543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8402102 + ... + 8402775.

It is an arithmetic number, because the mean of its divisors is an integer number (1420012191).

Almost surely, 2^5663243549 is an apocalyptic number.

It is an amenable number.

5663243549 is a deficient number, since it is larger than the sum of its proper divisors (16805215).

5663243549 is a wasteful number, since it uses less digits than its factorization.

5663243549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16805214.

The product of its digits is 2332800, while the sum is 47.

The square root of 5663243549 is about 75254.5251064679. The cubic root of 5663243549 is about 1782.4680182865.

The spelling of 5663243549 in words is "five billion, six hundred sixty-three million, two hundred forty-three thousand, five hundred forty-nine".