14689554721 has 16 divisors (see below), whose sum is σ = 15863480640. Its totient is φ = 13560307200.

The previous prime is 14689554709. The next prime is 14689554731. The reversal of 14689554721 is 12745598641.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14689554721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14689554731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51321 + ... + 178921.

It is an arithmetic number, because the mean of its divisors is an integer number (991467540).

Almost surely, 2^14689554721 is an apocalyptic number.

It is an amenable number.

14689554721 is a deficient number, since it is larger than the sum of its proper divisors (1173925919).

14689554721 is a wasteful number, since it uses less digits than its factorization.

14689554721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127776.

The product of its digits is 2419200, while the sum is 52.

The spelling of 14689554721 in words is "fourteen billion, six hundred eighty-nine million, five hundred fifty-four thousand, seven hundred twenty-one".