9197675676209 has 2 divisors, whose sum is σ = 9197675676210. Its totient is φ = 9197675676208.

The previous prime is 9197675676199. The next prime is 9197675676221. The reversal of 9197675676209 is 9026765767919.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6628323149809 + 2569352526400 = 2574553^2 + 1602920^2 .

It is a cyclic number.

It is not a de Polignac number, because 9197675676209 - 2⁴ = 9197675676193 is a prime.

It is a super-2 number, since 2×9197675676209² (a number of 27 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (9197675676109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4598837838104 + 4598837838105.

It is an arithmetic number, because the mean of its divisors is an integer number (4598837838105).

Almost surely, 2^{9197675676209} is an apocalyptic number.

It is an amenable number.

9197675676209 is a deficient number, since it is larger than the sum of its proper divisors (1).

9197675676209 is an equidigital number, since it uses as much as digits as its factorization.

9197675676209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 540101520, while the sum is 74.

The spelling of 9197675676209 in words is "nine trillion, one hundred ninety-seven billion, six hundred seventy-five million, six hundred seventy-six thousand, two hundred nine".