243109066807 has 2 divisors, whose sum is σ = 243109066808. Its totient is φ = 243109066806.

The previous prime is 243109066789. The next prime is 243109066819. The reversal of 243109066807 is 708660901342.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243109066807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243109066307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121554533403 + 121554533404.

It is an arithmetic number, because the mean of its divisors is an integer number (121554533404).

Almost surely, 2^243109066807 is an apocalyptic number.

243109066807 is a deficient number, since it is larger than the sum of its proper divisors (1).

243109066807 is an equidigital number, since it uses as much as digits as its factorization.

243109066807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 435456, while the sum is 46.

The spelling of 243109066807 in words is "two hundred forty-three billion, one hundred nine million, sixty-six thousand, eight hundred seven".