245343253115617 has 2 divisors, whose sum is σ = 245343253115618. Its totient is φ = 245343253115616.

The previous prime is 245343253115531. The next prime is 245343253115713. The reversal of 245343253115617 is 716511352343542.

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., 230786655088896 + 14556598026721 = 15191664^2 + 3815311^2 .

It is a cyclic number.

It is not a de Polignac number, because 245343253115617 - 2¹⁹ = 245343252591329 is a prime.

It is not a weakly prime, because it can be changed into another prime (245343253115417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122671626557808 + 122671626557809.

It is an arithmetic number, because the mean of its divisors is an integer number (122671626557809).

Almost surely, 2^{245343253115617} is an apocalyptic number.

It is an amenable number.

245343253115617 is a deficient number, since it is larger than the sum of its proper divisors (1).

245343253115617 is an equidigital number, since it uses as much as digits as its factorization.

245343253115617 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072000, while the sum is 52.

The spelling of 245343253115617 in words is "two hundred forty-five trillion, three hundred forty-three billion, two hundred fifty-three million, one hundred fifteen thousand, six hundred seventeen".