9717842513 has 2 divisors, whose sum is σ = 9717842514. Its totient is φ = 9717842512.

The previous prime is 9717842501. The next prime is 9717842557. The reversal of 9717842513 is 3152487179.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9444535489 + 273307024 = 97183^2 + 16532^2 .

It is a cyclic number.

It is not a de Polignac number, because 9717842513 - 2⁸ = 9717842257 is a prime.

It is not a weakly prime, because it can be changed into another prime (9717842593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4858921256 + 4858921257.

It is an arithmetic number, because the mean of its divisors is an integer number (4858921257).

Almost surely, 2^9717842513 is an apocalyptic number.

It is an amenable number.

9717842513 is a deficient number, since it is larger than the sum of its proper divisors (1).

9717842513 is an equidigital number, since it uses as much as digits as its factorization.

9717842513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 423360, while the sum is 47.

The square root of 9717842513 is about 98579.1180372395. The cubic root of 9717842513 is about 2133.9780707822.

The spelling of 9717842513 in words is "nine billion, seven hundred seventeen million, eight hundred forty-two thousand, five hundred thirteen".