11643312056 has 16 divisors (see below), whose sum is σ = 21837861240. Its totient is φ = 5819882400.

The previous prime is 11643312007. The next prime is 11643312067. The reversal of 11643312056 is 65021334611.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 193595 + ... + 246506.

Almost surely, 2^11643312056 is an apocalyptic number.

It is an amenable number.

11643312056 is a deficient number, since it is larger than the sum of its proper divisors (10194549184).

11643312056 is a wasteful number, since it uses less digits than its factorization.

11643312056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443414 (or 443410 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

Adding to 11643312056 its reverse (65021334611), we get a palindrome (76664646667).

The spelling of 11643312056 in words is "eleven billion, six hundred forty-three million, three hundred twelve thousand, fifty-six".