20450201342243 has 2 divisors, whose sum is σ = 20450201342244. Its totient is φ = 20450201342242.

The previous prime is 20450201342237. The next prime is 20450201342287. The reversal of 20450201342243 is 34224310205402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20450201342243 - 2¹⁴ = 20450201325859 is a prime.

It is not a weakly prime, because it can be changed into another prime (20450201345243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10225100671121 + 10225100671122.

It is an arithmetic number, because the mean of its divisors is an integer number (10225100671122).

Almost surely, 2^{20450201342243} is an apocalyptic number.

20450201342243 is a deficient number, since it is larger than the sum of its proper divisors (1).

20450201342243 is an equidigital number, since it uses as much as digits as its factorization.

20450201342243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46080, while the sum is 32.

Adding to 20450201342243 its reverse (34224310205402), we get a palindrome (54674511547645).

The spelling of 20450201342243 in words is "twenty trillion, four hundred fifty billion, two hundred one million, three hundred forty-two thousand, two hundred forty-three".