11640663328 has 24 divisors (see below), whose sum is σ = 26191492992. Its totient is φ = 4988855616.

The previous prime is 11640663323. The next prime is 11640663389. The reversal of 11640663328 is 82336604611.

11640663328 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (11640663323) 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 3 ways as a sum of consecutive naturals, for example, 25983400 + ... + 25983847.

It is an arithmetic number, because the mean of its divisors is an integer number (1091312208).

Almost surely, 2^11640663328 is an apocalyptic number.

It is an amenable number.

11640663328 is an abundant number, since it is smaller than the sum of its proper divisors (14550829664).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11640663328 is an equidigital number, since it uses as much as digits as its factorization.

11640663328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51967264 (or 51967256 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 40.

The spelling of 11640663328 in words is "eleven billion, six hundred forty million, six hundred sixty-three thousand, three hundred twenty-eight".