11989843208 has 16 divisors (see below), whose sum is σ = 25692521280. Its totient is φ = 5138504208.

The previous prime is 11989843183. The next prime is 11989843223. The reversal of 11989843208 is 80234898911.

It is a self number, because there is not a number n which added to its sum of digits gives 11989843208.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107052116 + ... + 107052227.

It is an arithmetic number, because the mean of its divisors is an integer number (1605782580).

Almost surely, 2^11989843208 is an apocalyptic number.

It is an amenable number.

11989843208 is an abundant number, since it is smaller than the sum of its proper divisors (13702678072).

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

11989843208 is a wasteful number, since it uses less digits than its factorization.

11989843208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214104356 (or 214104352 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 53.

The spelling of 11989843208 in words is "eleven billion, nine hundred eighty-nine million, eight hundred forty-three thousand, two hundred eight".