11970834209 has 2 divisors, whose sum is σ = 11970834210. Its totient is φ = 11970834208.

The previous prime is 11970834167. The next prime is 11970834221. The reversal of 11970834209 is 90243807911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11945834209 + 25000000 = 109297^2 + 5000^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11970834209 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11970834209.

It is not a weakly prime, because it can be changed into another prime (11970834269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5985417104 + 5985417105.

It is an arithmetic number, because the mean of its divisors is an integer number (5985417105).

Almost surely, 2^11970834209 is an apocalyptic number.

It is an amenable number.

11970834209 is a deficient number, since it is larger than the sum of its proper divisors (1).

11970834209 is an equidigital number, since it uses as much as digits as its factorization.

11970834209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 44.

The spelling of 11970834209 in words is "eleven billion, nine hundred seventy million, eight hundred thirty-four thousand, two hundred nine".