14104147721 has 4 divisors (see below), whose sum is σ = 14120683332. Its totient is φ = 14087612112.

The previous prime is 14104147711. The next prime is 14104147763. The reversal of 14104147721 is 12774140141.

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 8581428496 + 5522719225 = 92636^2 + 74315^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14104147721 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (14104147711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8266526 + ... + 8268231.

It is an arithmetic number, because the mean of its divisors is an integer number (3530170833).

Almost surely, 2^14104147721 is an apocalyptic number.

It is an amenable number.

14104147721 is a deficient number, since it is larger than the sum of its proper divisors (16535611).

14104147721 is an equidigital number, since it uses as much as digits as its factorization.

14104147721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16535610.

The product of its (nonzero) digits is 6272, while the sum is 32.

Adding to 14104147721 its reverse (12774140141), we get a palindrome (26878287862).

The spelling of 14104147721 in words is "fourteen billion, one hundred four million, one hundred forty-seven thousand, seven hundred twenty-one".