209138048099219 has 2 divisors, whose sum is σ = 209138048099220. Its totient is φ = 209138048099218.

The previous prime is 209138048099171. The next prime is 209138048099237. The reversal of 209138048099219 is 912990840831902.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 209138048099219 - 2⁴⁰ = 208038536471443 is a prime.

It is a super-2 number, since 2×209138048099219² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (209138048099119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104569024049609 + 104569024049610.

It is an arithmetic number, because the mean of its divisors is an integer number (104569024049610).

Almost surely, 2^{209138048099219} is an apocalyptic number.

209138048099219 is a deficient number, since it is larger than the sum of its proper divisors (1).

209138048099219 is an equidigital number, since it uses as much as digits as its factorization.

209138048099219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20155392, while the sum is 65.

The spelling of 209138048099219 in words is "two hundred nine trillion, one hundred thirty-eight billion, forty-eight million, ninety-nine thousand, two hundred nineteen".