11943159820 has 48 divisors (see below), whose sum is σ = 25998336000. Its totient is φ = 4603757760.

The previous prime is 11943159779. The next prime is 11943159863. The reversal of 11943159820 is 2895134911.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107881 + ... + 188479.

It is an arithmetic number, because the mean of its divisors is an integer number (541632000).

Almost surely, 2^11943159820 is an apocalyptic number.

11943159820 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 11943159820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12999168000).

11943159820 is an abundant number, since it is smaller than the sum of its proper divisors (14055176180).

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

11943159820 is a wasteful number, since it uses less digits than its factorization.

11943159820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80878 (or 80876 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 43.

The spelling of 11943159820 in words is "eleven billion, nine hundred forty-three million, one hundred fifty-nine thousand, eight hundred twenty".