244557720012709 has 2 divisors, whose sum is σ = 244557720012710. Its totient is φ = 244557720012708.

The previous prime is 244557720012679. The next prime is 244557720012743. The reversal of 244557720012709 is 907210027755442.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 183223025280100 + 61334694732609 = 13535990^2 + 7831647^2 .

It is a cyclic number.

It is not a de Polignac number, because 244557720012709 - 2⁹ = 244557720012197 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 244557720012709.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (244557720013709) 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, 122278860006354 + 122278860006355.

It is an arithmetic number, because the mean of its divisors is an integer number (122278860006355).

Almost surely, 2^{244557720012709} is an apocalyptic number.

It is an amenable number.

244557720012709 is a deficient number, since it is larger than the sum of its proper divisors (1).

244557720012709 is an equidigital number, since it uses as much as digits as its factorization.

244557720012709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9878400, while the sum is 55.

The spelling of 244557720012709 in words is "two hundred forty-four trillion, five hundred fifty-seven billion, seven hundred twenty million, twelve thousand, seven hundred nine".