243444300413 has 2 divisors, whose sum is σ = 243444300414. Its totient is φ = 243444300412.

The previous prime is 243444300403. The next prime is 243444300497. The reversal of 243444300413 is 314003444342.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 234645297604 + 8799002809 = 484402^2 + 93803^2 .

It is a cyclic number.

It is not a de Polignac number, because 243444300413 - 2¹⁶ = 243444234877 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 243444300413.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243444300403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121722150206 + 121722150207.

It is an arithmetic number, because the mean of its divisors is an integer number (121722150207).

Almost surely, 2^243444300413 is an apocalyptic number.

It is an amenable number.

243444300413 is a deficient number, since it is larger than the sum of its proper divisors (1).

243444300413 is an equidigital number, since it uses as much as digits as its factorization.

243444300413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55296, while the sum is 32.

Adding to 243444300413 its reverse (314003444342), we get a palindrome (557447744755).

The spelling of 243444300413 in words is "two hundred forty-three billion, four hundred forty-four million, three hundred thousand, four hundred thirteen".