243143404434 has 96 divisors (see below), whose sum is σ = 671037194880. Its totient is φ = 61941874176.

The previous prime is 243143404423. The next prime is 243143404457. The reversal of 243143404434 is 434404341342.

243143404434 is a `hidden beast` number, since 2 + 43 + 143 + 40 + 4 + 434 = 666.

243143404434 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2946469 + ... + 3027864.

It is an arithmetic number, because the mean of its divisors is an integer number (6989970780).

Almost surely, 2^243143404434 is an apocalyptic number.

243143404434 is an abundant number, since it is smaller than the sum of its proper divisors (427893790446).

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

243143404434 is a wasteful number, since it uses less digits than its factorization.

243143404434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5974384 (or 5974381 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 36.

Adding to 243143404434 its reverse (434404341342), we get a palindrome (677547745776).

The spelling of 243143404434 in words is "two hundred forty-three billion, one hundred forty-three million, four hundred four thousand, four hundred thirty-four".