243006166456237 has 2 divisors, whose sum is σ = 243006166456238. Its totient is φ = 243006166456236.

The previous prime is 243006166456211. The next prime is 243006166456247. The reversal of 243006166456237 is 732654661600342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 242150136258276 + 856030197961 = 15561174^2 + 925219^2 .

It is a cyclic number.

It is not a de Polignac number, because 243006166456237 - 2¹⁵ = 243006166423469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243006166456247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121503083228118 + 121503083228119.

It is an arithmetic number, because the mean of its divisors is an integer number (121503083228119).

Almost surely, 2^{243006166456237} is an apocalyptic number.

It is an amenable number.

243006166456237 is a deficient number, since it is larger than the sum of its proper divisors (1).

243006166456237 is an equidigital number, since it uses as much as digits as its factorization.

243006166456237 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26127360, while the sum is 55.

The spelling of 243006166456237 in words is "two hundred forty-three trillion, six billion, one hundred sixty-six million, four hundred fifty-six thousand, two hundred thirty-seven".