968740116664321 has 2 divisors, whose sum is σ = 968740116664322. Its totient is φ = 968740116664320.

The previous prime is 968740116664297. The next prime is 968740116664363. The reversal of 968740116664321 is 123466611047869.

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., 721054339527025 + 247685777137296 = 26852455^2 + 15738036^2 .

It is a cyclic number.

It is not a de Polignac number, because 968740116664321 - 2¹³ = 968740116656129 is a prime.

It is a super-4 number, since 4×968740116664321⁴ (a number of 61 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (968740116664391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 484370058332160 + 484370058332161.

It is an arithmetic number, because the mean of its divisors is an integer number (484370058332161).

Almost surely, 2^{968740116664321} is an apocalyptic number.

It is an amenable number.

968740116664321 is a deficient number, since it is larger than the sum of its proper divisors (1).

968740116664321 is an equidigital number, since it uses as much as digits as its factorization.

968740116664321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62705664, while the sum is 64.

The spelling of 968740116664321 in words is "nine hundred sixty-eight trillion, seven hundred forty billion, one hundred sixteen million, six hundred sixty-four thousand, three hundred twenty-one".