11989423416 has 16 divisors (see below), whose sum is σ = 29973558600. Its totient is φ = 3996474464.

The previous prime is 11989423367. The next prime is 11989423477. The reversal of 11989423416 is 61432498911.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 249779631 + ... + 249779678.

Almost surely, 2^11989423416 is an apocalyptic number.

It is an amenable number.

11989423416 is an abundant number, since it is smaller than the sum of its proper divisors (17984135184).

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

11989423416 is a wasteful number, since it uses less digits than its factorization.

11989423416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499559318 (or 499559314 counting only the distinct ones).

The product of its digits is 373248, while the sum is 48.

The spelling of 11989423416 in words is "eleven billion, nine hundred eighty-nine million, four hundred twenty-three thousand, four hundred sixteen".