11155243441 has 2 divisors, whose sum is σ = 11155243442. Its totient is φ = 11155243440.

The previous prime is 11155243439. The next prime is 11155243459. The reversal of 11155243441 is 14434255111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8775755041 + 2379488400 = 93679^2 + 48780^2 .

It is a cyclic number.

It is not a de Polignac number, because 11155243441 - 2¹ = 11155243439 is a prime.

Together with 11155243439, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11155223441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5577621720 + 5577621721.

It is an arithmetic number, because the mean of its divisors is an integer number (5577621721).

Almost surely, 2^11155243441 is an apocalyptic number.

It is an amenable number.

11155243441 is a deficient number, since it is larger than the sum of its proper divisors (1).

11155243441 is an equidigital number, since it uses as much as digits as its factorization.

11155243441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9600, while the sum is 31.

Adding to 11155243441 its reverse (14434255111), we get a palindrome (25589498552).

The spelling of 11155243441 in words is "eleven billion, one hundred fifty-five million, two hundred forty-three thousand, four hundred forty-one".