209052246113 has 2 divisors, whose sum is σ = 209052246114. Its totient is φ = 209052246112.

The previous prime is 209052246043. The next prime is 209052246191. The reversal of 209052246113 is 311642250902.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 202561204624 + 6491041489 = 450068^2 + 80567^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-209052246113 is a prime.

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 (209052246913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104526123056 + 104526123057.

It is an arithmetic number, because the mean of its divisors is an integer number (104526123057).

Almost surely, 2^209052246113 is an apocalyptic number.

It is an amenable number.

209052246113 is a deficient number, since it is larger than the sum of its proper divisors (1).

209052246113 is an equidigital number, since it uses as much as digits as its factorization.

209052246113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 35.

The spelling of 209052246113 in words is "two hundred nine billion, fifty-two million, two hundred forty-six thousand, one hundred thirteen".