243115151441 has 4 divisors (see below), whose sum is σ = 243164883300. Its totient is φ = 243065419584.

The previous prime is 243115151423. The next prime is 243115151443. The reversal of 243115151441 is 144151511342.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 152956081216 + 90159070225 = 391096^2 + 300265^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243115151441 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 243115151398 and 243115151407.

It is not an unprimeable number, because it can be changed into a prime (243115151443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24858596 + ... + 24868373.

It is an arithmetic number, because the mean of its divisors is an integer number (60791220825).

Almost surely, 2^243115151441 is an apocalyptic number.

It is an amenable number.

243115151441 is a deficient number, since it is larger than the sum of its proper divisors (49731859).

243115151441 is an equidigital number, since it uses as much as digits as its factorization.

243115151441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49731858.

The product of its digits is 9600, while the sum is 32.

Adding to 243115151441 its reverse (144151511342), we get a palindrome (387266662783).

The spelling of 243115151441 in words is "two hundred forty-three billion, one hundred fifteen million, one hundred fifty-one thousand, four hundred forty-one".