14451998721 has 8 divisors (see below), whose sum is σ = 19270388160. Its totient is φ = 9634137552.

The previous prime is 14451998711. The next prime is 14451998753. The reversal of 14451998721 is 12789915441.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 14451998721 - 2⁵ = 14451998689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (14451998711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63085 + ... + 181338.

It is an arithmetic number, because the mean of its divisors is an integer number (2408798520).

It is a Proth number, since it is equal to 27565 ⋅ 2¹⁹ + 1 and 27565 < 2¹⁹.

Almost surely, 2^14451998721 is an apocalyptic number.

It is an amenable number.

14451998721 is a deficient number, since it is larger than the sum of its proper divisors (4818389439).

14451998721 is a wasteful number, since it uses less digits than its factorization.

14451998721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264135.

The product of its digits is 725760, while the sum is 51.

The spelling of 14451998721 in words is "fourteen billion, four hundred fifty-one million, nine hundred ninety-eight thousand, seven hundred twenty-one".