243342202243289 has 2 divisors, whose sum is σ = 243342202243290. Its totient is φ = 243342202243288.

The previous prime is 243342202243271. The next prime is 243342202243397. The reversal of 243342202243289 is 982342202243342.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 132964422240400 + 110377780002889 = 11531020^2 + 10506083^2 .

It is a cyclic number.

It is not a de Polignac number, because 243342202243289 - 2²⁰ = 243342201194713 is a prime.

It is a super-2 number, since 2×243342202243289² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (243342202246289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121671101121644 + 121671101121645.

It is an arithmetic number, because the mean of its divisors is an integer number (121671101121645).

Almost surely, 2^{243342202243289} is an apocalyptic number.

It is an amenable number.

243342202243289 is a deficient number, since it is larger than the sum of its proper divisors (1).

243342202243289 is an equidigital number, since it uses as much as digits as its factorization.

243342202243289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7962624, while the sum is 50.

The spelling of 243342202243289 in words is "two hundred forty-three trillion, three hundred forty-two billion, two hundred two million, two hundred forty-three thousand, two hundred eighty-nine".