243044015407 has 2 divisors, whose sum is σ = 243044015408. Its totient is φ = 243044015406.

The previous prime is 243044015303. The next prime is 243044015429. The reversal of 243044015407 is 704510440342.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243044015407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243044015477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121522007703 + 121522007704.

It is an arithmetic number, because the mean of its divisors is an integer number (121522007704).

Almost surely, 2^243044015407 is an apocalyptic number.

243044015407 is a deficient number, since it is larger than the sum of its proper divisors (1).

243044015407 is an equidigital number, since it uses as much as digits as its factorization.

243044015407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 53760, while the sum is 34.

Adding to 243044015407 its reverse (704510440342), we get a palindrome (947554455749).

The spelling of 243044015407 in words is "two hundred forty-three billion, forty-four million, fifteen thousand, four hundred seven".