11912009044289 has 2 divisors, whose sum is σ = 11912009044290. Its totient is φ = 11912009044288.

The previous prime is 11912009044259. The next prime is 11912009044343. The reversal of 11912009044289 is 98244090021911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6392892525889 + 5519116518400 = 2528417^2 + 2349280^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11912009044289 is a prime.

It is not a weakly prime, because it can be changed into another prime (11912009044259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5956004522144 + 5956004522145.

It is an arithmetic number, because the mean of its divisors is an integer number (5956004522145).

Almost surely, 2^{11912009044289} is an apocalyptic number.

It is an amenable number.

11912009044289 is a deficient number, since it is larger than the sum of its proper divisors (1).

11912009044289 is an equidigital number, since it uses as much as digits as its factorization.

11912009044289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 373248, while the sum is 50.

The spelling of 11912009044289 in words is "eleven trillion, nine hundred twelve billion, nine million, forty-four thousand, two hundred eighty-nine".