5644436611309 has 4 divisors (see below), whose sum is σ = 5644449334204. Its totient is φ = 5644423888416.

The previous prime is 5644436611277. The next prime is 5644436611369. The reversal of 5644436611309 is 9031166344465.

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 2831805743209 + 2812630868100 = 1682797^2 + 1677090^2 .

It is a cyclic number.

It is not a de Polignac number, because 5644436611309 - 2⁵ = 5644436611277 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 (5644436611369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5671002 + ... + 6591595.

It is an arithmetic number, because the mean of its divisors is an integer number (1411112333551).

Almost surely, 2^{5644436611309} is an apocalyptic number.

It is an amenable number.

5644436611309 is a deficient number, since it is larger than the sum of its proper divisors (12722895).

5644436611309 is a wasteful number, since it uses less digits than its factorization.

5644436611309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12722894.

The product of its (nonzero) digits is 5598720, while the sum is 52.

The spelling of 5644436611309 in words is "five trillion, six hundred forty-four billion, four hundred thirty-six million, six hundred eleven thousand, three hundred nine".