9907448890517 has 2 divisors, whose sum is σ = 9907448890518. Its totient is φ = 9907448890516.

The previous prime is 9907448890487. The next prime is 9907448890529. The reversal of 9907448890517 is 7150988447099.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6384672757681 + 3522776132836 = 2526791^2 + 1876906^2 .

It is a cyclic number.

It is not a de Polignac number, because 9907448890517 - 2¹⁰ = 9907448889493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9907448490517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4953724445258 + 4953724445259.

It is an arithmetic number, because the mean of its divisors is an integer number (4953724445259).

Almost surely, 2^{9907448890517} is an apocalyptic number.

It is an amenable number.

9907448890517 is a deficient number, since it is larger than the sum of its proper divisors (1).

9907448890517 is an equidigital number, since it uses as much as digits as its factorization.

9907448890517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 182891520, while the sum is 71.

The spelling of 9907448890517 in words is "nine trillion, nine hundred seven billion, four hundred forty-eight million, eight hundred ninety thousand, five hundred seventeen".