11143004209 has 2 divisors, whose sum is σ = 11143004210. Its totient is φ = 11143004208.

The previous prime is 11143004123. The next prime is 11143004251. The reversal of 11143004209 is 90240034111.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8943863184 + 2199141025 = 94572^2 + 46895^2 .

It is a cyclic number.

It is not a de Polignac number, because 11143004209 - 2¹³ = 11142996017 is a prime.

It is not a weakly prime, because it can be changed into another prime (11143004269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5571502104 + 5571502105.

It is an arithmetic number, because the mean of its divisors is an integer number (5571502105).

Almost surely, 2^11143004209 is an apocalyptic number.

It is an amenable number.

11143004209 is a deficient number, since it is larger than the sum of its proper divisors (1).

11143004209 is an equidigital number, since it uses as much as digits as its factorization.

11143004209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 25.

The spelling of 11143004209 in words is "eleven billion, one hundred forty-three million, four thousand, two hundred nine".