243345435407 has 2 divisors, whose sum is σ = 243345435408. Its totient is φ = 243345435406.

The previous prime is 243345435401. The next prime is 243345435451. The reversal of 243345435407 is 704534543342.

It is an a-pointer prime, because the next prime (243345435451) can be obtained adding 243345435407 to its sum of digits (44).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 243345435407 - 2²⁴ = 243328658191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243345435401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121672717703 + 121672717704.

It is an arithmetic number, because the mean of its divisors is an integer number (121672717704).

Almost surely, 2^243345435407 is an apocalyptic number.

243345435407 is a deficient number, since it is larger than the sum of its proper divisors (1).

243345435407 is an equidigital number, since it uses as much as digits as its factorization.

243345435407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2419200, while the sum is 44.

Adding to 243345435407 its reverse (704534543342), we get a palindrome (947879978749).

The spelling of 243345435407 in words is "two hundred forty-three billion, three hundred forty-five million, four hundred thirty-five thousand, four hundred seven".