14815823421 has 16 divisors (see below), whose sum is σ = 22800025728. Its totient is φ = 8382360000.

The previous prime is 14815823417. The next prime is 14815823423. The reversal of 14815823421 is 12432851841.

It is not a de Polignac number, because 14815823421 - 2² = 14815823417 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 14815823421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14815823423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3490530 + ... + 3494771.

It is an arithmetic number, because the mean of its divisors is an integer number (1425001608).

Almost surely, 2^14815823421 is an apocalyptic number.

It is an amenable number.

14815823421 is a deficient number, since it is larger than the sum of its proper divisors (7984202307).

14815823421 is a wasteful number, since it uses less digits than its factorization.

14815823421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6985412.

The product of its digits is 61440, while the sum is 39.

The spelling of 14815823421 in words is "fourteen billion, eight hundred fifteen million, eight hundred twenty-three thousand, four hundred twenty-one".