11943843336 has 80 divisors (see below), whose sum is σ = 33575096940. Its totient is φ = 3966848640.

The previous prime is 11943843319. The next prime is 11943843337. The reversal of 11943843336 is 63334834911.

It can be written as a sum of positive squares in 2 ways, for example, as 11925950436 + 17892900 = 109206^2 + 4230^2 .

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 11943843291 and 11943843300.

It is not an unprimeable number, because it can be changed into a prime (11943843337) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 146226 + ... + 212766.

Almost surely, 2^11943843336 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 11943843336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16787548470).

11943843336 is an abundant number, since it is smaller than the sum of its proper divisors (21631253604).

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

11943843336 is a wasteful number, since it uses less digits than its factorization.

11943843336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66836 (or 66823 counting only the distinct ones).

The product of its digits is 559872, while the sum is 45.

The spelling of 11943843336 in words is "eleven billion, nine hundred forty-three million, eight hundred forty-three thousand, three hundred thirty-six".