11643168856 has 24 divisors (see below), whose sum is σ = 23995995660. Its totient is φ = 5292349040.

The previous prime is 11643168853. The next prime is 11643168871. The reversal of 11643168856 is 65886134611.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11643168853) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6013066 + ... + 6015001.

Almost surely, 2^11643168856 is an apocalyptic number.

It is an amenable number.

11643168856 is an abundant number, since it is smaller than the sum of its proper divisors (12352826804).

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

11643168856 is a wasteful number, since it uses less digits than its factorization.

11643168856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12028095 (or 12028080 counting only the distinct ones).

The product of its digits is 829440, while the sum is 49.

The spelling of 11643168856 in words is "eleven billion, six hundred forty-three million, one hundred sixty-eight thousand, eight hundred fifty-six".