243440132441 has 12 divisors (see below), whose sum is σ = 270232305252. Its totient is φ = 219118020000.

The previous prime is 243440132381. The next prime is 243440132473. The reversal of 243440132441 is 144231044342.

It can be written as a sum of positive squares in 2 ways, for example, as 209548795225 + 33891337216 = 457765^2 + 184096^2 .

It is a de Polignac number, because none of the positive numbers 2^k-243440132441 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 243440132398 and 243440132407.

It is not an unprimeable number, because it can be changed into a prime (243440102441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9947690 + ... + 9972131.

It is an arithmetic number, because the mean of its divisors is an integer number (22519358771).

Almost surely, 2^243440132441 is an apocalyptic number.

It is an amenable number.

243440132441 is a deficient number, since it is larger than the sum of its proper divisors (26792172811).

243440132441 is a wasteful number, since it uses less digits than its factorization.

243440132441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19919944 (or 19919933 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 243440132441 its reverse (144231044342), we get a palindrome (387671176783).

The spelling of 243440132441 in words is "two hundred forty-three billion, four hundred forty million, one hundred thirty-two thousand, four hundred forty-one".