243034245089 has 2 divisors, whose sum is σ = 243034245090. Its totient is φ = 243034245088.

The previous prime is 243034245079. The next prime is 243034245151. The reversal of 243034245089 is 980542430342.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 157761484864 + 85272760225 = 397192^2 + 292015^2 .

It is a cyclic number.

It is not a de Polignac number, because 243034245089 - 2²⁰ = 243033196513 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (243034245019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121517122544 + 121517122545.

It is an arithmetic number, because the mean of its divisors is an integer number (121517122545).

Almost surely, 2^243034245089 is an apocalyptic number.

It is an amenable number.

243034245089 is a deficient number, since it is larger than the sum of its proper divisors (1).

243034245089 is an equidigital number, since it uses as much as digits as its factorization.

243034245089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 829440, while the sum is 44.

The spelling of 243034245089 in words is "two hundred forty-three billion, thirty-four million, two hundred forty-five thousand, eighty-nine".