243724112089 has 2 divisors, whose sum is σ = 243724112090. Its totient is φ = 243724112088.

The previous prime is 243724112069. The next prime is 243724112117. The reversal of 243724112089 is 980211427342.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 125943363225 + 117780748864 = 354885^2 + 343192^2 .

It is a cyclic number.

It is not a de Polignac number, because 243724112089 - 2⁹ = 243724111577 is a prime.

It is not a weakly prime, because it can be changed into another prime (243724112069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121862056044 + 121862056045.

It is an arithmetic number, because the mean of its divisors is an integer number (121862056045).

Almost surely, 2^243724112089 is an apocalyptic number.

It is an amenable number.

243724112089 is a deficient number, since it is larger than the sum of its proper divisors (1).

243724112089 is an equidigital number, since it uses as much as digits as its factorization.

243724112089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 193536, while the sum is 43.

The spelling of 243724112089 in words is "two hundred forty-three billion, seven hundred twenty-four million, one hundred twelve thousand, eighty-nine".