243403440402 has 16 divisors (see below), whose sum is σ = 486878942880. Its totient is φ = 81122469792.

The previous prime is 243403440367. The next prime is 243403440433. The reversal of 243403440402 is 204044304342.

243403440402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 243403440402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2958627 + ... + 3039782.

It is an arithmetic number, because the mean of its divisors is an integer number (30429933930).

Almost surely, 2^243403440402 is an apocalyptic number.

243403440402 is an abundant number, since it is smaller than the sum of its proper divisors (243475502478).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

243403440402 is a wasteful number, since it uses less digits than its factorization.

243403440402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6005177.

The product of its (nonzero) digits is 36864, while the sum is 30.

Adding to 243403440402 its reverse (204044304342), we get a palindrome (447447744744).

The spelling of 243403440402 in words is "two hundred forty-three billion, four hundred three million, four hundred forty thousand, four hundred two".