9997935254017 has 2 divisors, whose sum is σ = 9997935254018. Its totient is φ = 9997935254016.

The previous prime is 9997935253991. The next prime is 9997935254093. The reversal of 9997935254017 is 7104525397999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5772275333136 + 4225659920881 = 2402556^2 + 2055641^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9997935254017 is a prime.

It is not a weakly prime, because it can be changed into another prime (9997935254717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4998967627008 + 4998967627009.

It is an arithmetic number, because the mean of its divisors is an integer number (4998967627009).

Almost surely, 2^{9997935254017} is an apocalyptic number.

It is an amenable number.

9997935254017 is a deficient number, since it is larger than the sum of its proper divisors (1).

9997935254017 is an equidigital number, since it uses as much as digits as its factorization.

9997935254017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192893400, while the sum is 70.

The spelling of 9997935254017 in words is "nine trillion, nine hundred ninety-seven billion, nine hundred thirty-five million, two hundred fifty-four thousand, seventeen".