20244243002209 has 2 divisors, whose sum is σ = 20244243002210. Its totient is φ = 20244243002208.

The previous prime is 20244243002197. The next prime is 20244243002213. The reversal of 20244243002209 is 90220034244202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16549763059600 + 3694479942609 = 4068140^2 + 1922103^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20244243002209 is a prime.

It is not a weakly prime, because it can be changed into another prime (20244243003209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10122121501104 + 10122121501105.

It is an arithmetic number, because the mean of its divisors is an integer number (10122121501105).

Almost surely, 2^{20244243002209} is an apocalyptic number.

It is an amenable number.

20244243002209 is a deficient number, since it is larger than the sum of its proper divisors (1).

20244243002209 is an equidigital number, since it uses as much as digits as its factorization.

20244243002209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55296, while the sum is 34.

The spelling of 20244243002209 in words is "twenty trillion, two hundred forty-four billion, two hundred forty-three million, two thousand, two hundred nine".