544563312509 has 2 divisors, whose sum is σ = 544563312510. Its totient is φ = 544563312508.

The previous prime is 544563312497. The next prime is 544563312529. The reversal of 544563312509 is 905213365445.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 523495660900 + 21067651609 = 723530^2 + 145147^2 .

It is a cyclic number.

It is not a de Polignac number, because 544563312509 - 2¹⁶ = 544563246973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (544563312529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272281656254 + 272281656255.

It is an arithmetic number, because the mean of its divisors is an integer number (272281656255).

Almost surely, 2^544563312509 is an apocalyptic number.

It is an amenable number.

544563312509 is a deficient number, since it is larger than the sum of its proper divisors (1).

544563312509 is an equidigital number, since it uses as much as digits as its factorization.

544563312509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944000, while the sum is 47.

The spelling of 544563312509 in words is "five hundred forty-four billion, five hundred sixty-three million, three hundred twelve thousand, five hundred nine".