243233723404073 has 2 divisors, whose sum is σ = 243233723404074. Its totient is φ = 243233723404072.

The previous prime is 243233723404033. The next prime is 243233723404079. The reversal of 243233723404073 is 370404327332342.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127750394339584 + 115483329064489 = 11302672^2 + 10746317^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243233723404073 is a prime.

It is not a weakly prime, because it can be changed into another prime (243233723404079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121616861702036 + 121616861702037.

It is an arithmetic number, because the mean of its divisors is an integer number (121616861702037).

Almost surely, 2^{243233723404073} is an apocalyptic number.

It is an amenable number.

243233723404073 is a deficient number, since it is larger than the sum of its proper divisors (1).

243233723404073 is an equidigital number, since it uses as much as digits as its factorization.

243233723404073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6096384, while the sum is 47.

The spelling of 243233723404073 in words is "two hundred forty-three trillion, two hundred thirty-three billion, seven hundred twenty-three million, four hundred four thousand, seventy-three".