11563944000 has 448 divisors, whose sum is σ = 46217433600. Its totient is φ = 2487091200.

The previous prime is 11563943977. The next prime is 11563944031. The reversal of 11563944000 is 44936511.

It is a tau number, because it is divible by the number of its divisors (448).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2853976 + ... + 2858024.

Almost surely, 2^11563944000 is an apocalyptic number.

11563944000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11563944000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23108716800).

11563944000 is an abundant number, since it is smaller than the sum of its proper divisors (34653489600).

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

11563944000 is a wasteful number, since it uses less digits than its factorization.

11563944000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4103 (or 4083 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The spelling of 11563944000 in words is "eleven billion, five hundred sixty-three million, nine hundred forty-four thousand".