544563306389 has 2 divisors, whose sum is σ = 544563306390. Its totient is φ = 544563306388.

The previous prime is 544563306379. The next prime is 544563306449. The reversal of 544563306389 is 983603365445.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 274015606225 + 270547700164 = 523465^2 + 520142^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-544563306389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (544563306319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272281653194 + 272281653195.

It is an arithmetic number, because the mean of its divisors is an integer number (272281653195).

Almost surely, 2^544563306389 is an apocalyptic number.

It is an amenable number.

544563306389 is a deficient number, since it is larger than the sum of its proper divisors (1).

544563306389 is an equidigital number, since it uses as much as digits as its factorization.

544563306389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27993600, while the sum is 56.

The spelling of 544563306389 in words is "five hundred forty-four billion, five hundred sixty-three million, three hundred six thousand, three hundred eighty-nine".