11783312009 has 16 divisors (see below), whose sum is σ = 14091494400. Its totient is φ = 9640270080.

The previous prime is 11783311979. The next prime is 11783312033. The reversal of 11783312009 is 90021338711.

It is a happy number.

11783312009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11783312009 - 2²⁸ = 11514876553 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11783312009.

It is not an unprimeable number, because it can be changed into a prime (11783312039) 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 15 ways as a sum of consecutive naturals, for example, 356084 + ... + 387765.

It is an arithmetic number, because the mean of its divisors is an integer number (880718400).

Almost surely, 2^11783312009 is an apocalyptic number.

It is an amenable number.

11783312009 is a deficient number, since it is larger than the sum of its proper divisors (2308182391).

11783312009 is an equidigital number, since it uses as much as digits as its factorization.

11783312009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743960.

The product of its (nonzero) digits is 9072, while the sum is 35.

The spelling of 11783312009 in words is "eleven billion, seven hundred eighty-three million, three hundred twelve thousand, nine".