11105449387 has 2 divisors, whose sum is σ = 11105449388. Its totient is φ = 11105449386.

The previous prime is 11105449373. The next prime is 11105449417. The reversal of 11105449387 is 78394450111.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (78394450111) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11105449387 is a prime.

It is not a weakly prime, because it can be changed into another prime (11105449987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5552724693 + 5552724694.

It is an arithmetic number, because the mean of its divisors is an integer number (5552724694).

Almost surely, 2^11105449387 is an apocalyptic number.

11105449387 is a deficient number, since it is larger than the sum of its proper divisors (1).

11105449387 is an equidigital number, since it uses as much as digits as its factorization.

11105449387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 43.

Adding to 11105449387 its reverse (78394450111), we get a palindrome (89499899498).

The spelling of 11105449387 in words is "eleven billion, one hundred five million, four hundred forty-nine thousand, three hundred eighty-seven".