121716902319263 has 2 divisors, whose sum is σ = 121716902319264. Its totient is φ = 121716902319262.

The previous prime is 121716902319191. The next prime is 121716902319281. The reversal of 121716902319263 is 362913209617121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121716902319263 - 2²⁰ = 121716901270687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121716902315263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60858451159631 + 60858451159632.

It is an arithmetic number, because the mean of its divisors is an integer number (60858451159632).

Almost surely, 2^{121716902319263} is an apocalyptic number.

121716902319263 is a deficient number, since it is larger than the sum of its proper divisors (1).

121716902319263 is an equidigital number, since it uses as much as digits as its factorization.

121716902319263 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1469664, while the sum is 53.

The spelling of 121716902319263 in words is "one hundred twenty-one trillion, seven hundred sixteen billion, nine hundred two million, three hundred nineteen thousand, two hundred sixty-three".