243042674437 has 2 divisors, whose sum is σ = 243042674438. Its totient is φ = 243042674436.

The previous prime is 243042674359. The next prime is 243042674443. The reversal of 243042674437 is 734476240342.

243042674437 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 211568721156 + 31473953281 = 459966^2 + 177409^2 .

It is a cyclic number.

It is not a de Polignac number, because 243042674437 - 2²³ = 243034285829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243042674477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121521337218 + 121521337219.

It is an arithmetic number, because the mean of its divisors is an integer number (121521337219).

Almost surely, 2^243042674437 is an apocalyptic number.

It is an amenable number.

243042674437 is a deficient number, since it is larger than the sum of its proper divisors (1).

243042674437 is an equidigital number, since it uses as much as digits as its factorization.

243042674437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2709504, while the sum is 46.

The spelling of 243042674437 in words is "two hundred forty-three billion, forty-two million, six hundred seventy-four thousand, four hundred thirty-seven".