243422340089 has 2 divisors, whose sum is σ = 243422340090. Its totient is φ = 243422340088.

The previous prime is 243422340061. The next prime is 243422340107. The reversal of 243422340089 is 980043224342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 241822980025 + 1599360064 = 491755^2 + 39992^2 .

It is a cyclic number.

It is not a de Polignac number, because 243422340089 - 2²⁰ = 243421291513 is a prime.

It is not a weakly prime, because it can be changed into another prime (243422340389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121711170044 + 121711170045.

It is an arithmetic number, because the mean of its divisors is an integer number (121711170045).

Almost surely, 2^243422340089 is an apocalyptic number.

It is an amenable number.

243422340089 is a deficient number, since it is larger than the sum of its proper divisors (1).

243422340089 is an equidigital number, since it uses as much as digits as its factorization.

243422340089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 331776, while the sum is 41.

The spelling of 243422340089 in words is "two hundred forty-three billion, four hundred twenty-two million, three hundred forty thousand, eighty-nine".