999998880017 has 2 divisors, whose sum is σ = 999998880018. Its totient is φ = 999998880016.

The previous prime is 999998880011. The next prime is 999998880037. The reversal of 999998880017 is 710088899999.

999998880017 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 990978439441 + 9020440576 = 995479^2 + 94976^2 .

It is a cyclic number.

It is not a de Polignac number, because 999998880017 - 2³⁶ = 931279403281 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 999998880017.

It is not a weakly prime, because it can be changed into another prime (999998880011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499999440008 + 499999440009.

It is an arithmetic number, because the mean of its divisors is an integer number (499999440009).

Almost surely, 2^999998880017 is an apocalyptic number.

It is an amenable number.

999998880017 is a deficient number, since it is larger than the sum of its proper divisors (1).

999998880017 is an equidigital number, since it uses as much as digits as its factorization.

999998880017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 211631616, while the sum is 77.

The spelling of 999998880017 in words is "nine hundred ninety-nine billion, nine hundred ninety-eight million, eight hundred eighty thousand, seventeen".