11968280342489 has 2 divisors, whose sum is σ = 11968280342490. Its totient is φ = 11968280342488.

The previous prime is 11968280342467. The next prime is 11968280342497. The reversal of 11968280342489 is 98424308286911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9875651928025 + 2092628414464 = 3142555^2 + 1446592^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11968280342489 is a prime.

It is not a weakly prime, because it can be changed into another prime (11968280348489) 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, 5984140171244 + 5984140171245.

It is an arithmetic number, because the mean of its divisors is an integer number (5984140171245).

Almost surely, 2^{11968280342489} is an apocalyptic number.

It is an amenable number.

11968280342489 is a deficient number, since it is larger than the sum of its proper divisors (1).

11968280342489 is an equidigital number, since it uses as much as digits as its factorization.

11968280342489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47775744, while the sum is 65.

The spelling of 11968280342489 in words is "eleven trillion, nine hundred sixty-eight billion, two hundred eighty million, three hundred forty-two thousand, four hundred eighty-nine".