11143404247 has 2 divisors, whose sum is σ = 11143404248. Its totient is φ = 11143404246.

The previous prime is 11143404241. The next prime is 11143404257. The reversal of 11143404247 is 74240434111.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11143404247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11143404241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5571702123 + 5571702124.

It is an arithmetic number, because the mean of its divisors is an integer number (5571702124).

Almost surely, 2^11143404247 is an apocalyptic number.

11143404247 is a deficient number, since it is larger than the sum of its proper divisors (1).

11143404247 is an equidigital number, since it uses as much as digits as its factorization.

11143404247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10752, while the sum is 31.

Adding to 11143404247 its reverse (74240434111), we get a palindrome (85383838358).

The spelling of 11143404247 in words is "eleven billion, one hundred forty-three million, four hundred four thousand, two hundred forty-seven".