14718832721 has 4 divisors (see below), whose sum is σ = 14719472052. Its totient is φ = 14718193392.

The previous prime is 14718832697. The next prime is 14718832729. The reversal of 14718832721 is 12723881741.

It is a happy number.

14718832721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3873693121 + 10845139600 = 62239^2 + 104140^2 .

It is a cyclic number.

It is not a de Polignac number, because 14718832721 - 2¹⁰ = 14718831697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14718832729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 283790 + ... + 331623.

It is an arithmetic number, because the mean of its divisors is an integer number (3679868013).

Almost surely, 2^14718832721 is an apocalyptic number.

It is an amenable number.

14718832721 is a deficient number, since it is larger than the sum of its proper divisors (639331).

14718832721 is an equidigital number, since it uses as much as digits as its factorization.

14718832721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639330.

The product of its digits is 150528, while the sum is 44.

The spelling of 14718832721 in words is "fourteen billion, seven hundred eighteen million, eight hundred thirty-two thousand, seven hundred twenty-one".