11805331712 has 144 divisors (see below), whose sum is σ = 26058547200. Its totient is φ = 5315880960.

The previous prime is 11805331697. The next prime is 11805331717. The reversal of 11805331712 is 21713350811.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (11805331717) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8895593 + ... + 8896919.

Almost surely, 2^11805331712 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 11805331712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13029273600).

11805331712 is an abundant number, since it is smaller than the sum of its proper divisors (14253215488).

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

11805331712 is a wasteful number, since it uses less digits than its factorization.

11805331712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1452 (or 1438 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 32.

The spelling of 11805331712 in words is "eleven billion, eight hundred five million, three hundred thirty-one thousand, seven hundred twelve".