243243405212 has 48 divisors (see below), whose sum is σ = 443167351200. Its totient is φ = 116678580480.

The previous prime is 243243405199. The next prime is 243243405263. The reversal of 243243405212 is 212504342342.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50789714 + ... + 50794502.

It is an arithmetic number, because the mean of its divisors is an integer number (9232653150).

Almost surely, 2^243243405212 is an apocalyptic number.

It is an amenable number.

243243405212 is a deficient number, since it is larger than the sum of its proper divisors (199923945988).

243243405212 is a wasteful number, since it uses less digits than its factorization.

243243405212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7526 (or 7524 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 32.

Adding to 243243405212 its reverse (212504342342), we get a palindrome (455747747554).

The spelling of 243243405212 in words is "two hundred forty-three billion, two hundred forty-three million, four hundred five thousand, two hundred twelve".