9800000000009 has 2 divisors, whose sum is σ = 9800000000010. Its totient is φ = 9800000000008.

The previous prime is 9799999999877. The next prime is 9800000000017. The reversal of 9800000000009 is 9000000000089.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9261236659984 + 538763340025 = 3043228^2 + 734005^2 .

It is a cyclic number.

It is not a de Polignac number, because 9800000000009 - 2²⁰ = 9799998951433 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 9799999999897 and 9799999999906.

It is not a weakly prime, because it can be changed into another prime (9800000090009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4900000000004 + 4900000000005.

It is an arithmetic number, because the mean of its divisors is an integer number (4900000000005).

Almost surely, 2^{9800000000009} is an apocalyptic number.

It is an amenable number.

9800000000009 is a deficient number, since it is larger than the sum of its proper divisors (1).

9800000000009 is an equidigital number, since it uses as much as digits as its factorization.

9800000000009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 26.

The spelling of 9800000000009 in words is "nine trillion, eight hundred billion, nine", and thus it is an aban number.