243443052439 has 2 divisors, whose sum is σ = 243443052440. Its totient is φ = 243443052438.

The previous prime is 243443052403. The next prime is 243443052451. The reversal of 243443052439 is 934250344342.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 243443052439 - 2¹⁹ = 243442528151 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 243443052395 and 243443052404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243443052539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121721526219 + 121721526220.

It is an arithmetic number, because the mean of its divisors is an integer number (121721526220).

Almost surely, 2^243443052439 is an apocalyptic number.

243443052439 is a deficient number, since it is larger than the sum of its proper divisors (1).

243443052439 is an equidigital number, since it uses as much as digits as its factorization.

243443052439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1244160, while the sum is 43.

The spelling of 243443052439 in words is "two hundred forty-three billion, four hundred forty-three million, fifty-two thousand, four hundred thirty-nine".