243723661612 has 24 divisors (see below), whose sum is σ = 431341908480. Its totient is φ = 120483327360.

The previous prime is 243723661567. The next prime is 243723661663. The reversal of 243723661612 is 216166327342.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8300437 + ... + 8329747.

It is an arithmetic number, because the mean of its divisors is an integer number (17972579520).

Almost surely, 2^243723661612 is an apocalyptic number.

It is an amenable number.

243723661612 is a deficient number, since it is larger than the sum of its proper divisors (187618246868).

243723661612 is a wasteful number, since it uses less digits than its factorization.

243723661612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52761 (or 52759 counting only the distinct ones).

The product of its digits is 435456, while the sum is 43.

Adding to 243723661612 its reverse (216166327342), we get a palindrome (459889988954).

The spelling of 243723661612 in words is "two hundred forty-three billion, seven hundred twenty-three million, six hundred sixty-one thousand, six hundred twelve".