14821991424 has 132 divisors (see below), whose sum is σ = 42956966416. Its totient is φ = 4922339328.

The previous prime is 14821991417. The next prime is 14821991441. The reversal of 14821991424 is 42419912841.

14821991424 is a `hidden beast` number, since 1 + 4 + 8 + 219 + 9 + 1 + 424 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 14821991424.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2605287 + ... + 2610969.

Almost surely, 2^14821991424 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 14821991424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21478483208).

14821991424 is an abundant number, since it is smaller than the sum of its proper divisors (28134974992).

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

14821991424 is a wasteful number, since it uses less digits than its factorization.

14821991424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5992 (or 5971 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The spelling of 14821991424 in words is "fourteen billion, eight hundred twenty-one million, nine hundred ninety-one thousand, four hundred twenty-four".