243230766611089 has 2 divisors, whose sum is σ = 243230766611090. Its totient is φ = 243230766611088.

The previous prime is 243230766611009. The next prime is 243230766611291. The reversal of 243230766611089 is 980116667032342.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 224455080330625 + 18775686280464 = 14981825^2 + 4333092^2 .

It is a cyclic number.

It is not a de Polignac number, because 243230766611089 - 2³³ = 243222176676497 is a prime.

It is a super-2 number, since 2×243230766611089² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (243230766611009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121615383305544 + 121615383305545.

It is an arithmetic number, because the mean of its divisors is an integer number (121615383305545).

Almost surely, 2^{243230766611089} is an apocalyptic number.

It is an amenable number.

243230766611089 is a deficient number, since it is larger than the sum of its proper divisors (1).

243230766611089 is an equidigital number, since it uses as much as digits as its factorization.

243230766611089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15676416, while the sum is 58.

The spelling of 243230766611089 in words is "two hundred forty-three trillion, two hundred thirty billion, seven hundred sixty-six million, six hundred eleven thousand, eighty-nine".