11853221568 has 112 divisors (see below), whose sum is σ = 31741628160. Its totient is φ = 3903427584.

The previous prime is 11853221539. The next prime is 11853221579. The reversal of 11853221568 is 86512235811.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10191355 + ... + 10192517.

Almost surely, 2^11853221568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11853221568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15870814080).

11853221568 is an abundant number, since it is smaller than the sum of its proper divisors (19888406592).

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

11853221568 is a wasteful number, since it uses less digits than its factorization.

11853221568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1774 (or 1764 counting only the distinct ones).

The product of its digits is 115200, while the sum is 42.

The spelling of 11853221568 in words is "eleven billion, eight hundred fifty-three million, two hundred twenty-one thousand, five hundred sixty-eight".