14644921589 has 4 divisors (see below), whose sum is σ = 14725832940. Its totient is φ = 14564010240.

The previous prime is 14644921559. The next prime is 14644921597. The reversal of 14644921589 is 98512944641.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98512944641 = 131 ⋅752007211.

It can be written as a sum of positive squares in 2 ways, for example, as 5392405489 + 9252516100 = 73433^2 + 96190^2 .

It is a cyclic number.

It is not a de Polignac number, because 14644921589 - 2¹⁶ = 14644856053 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 14644921589.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14644921559) 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, 40455404 + ... + 40455765.

It is an arithmetic number, because the mean of its divisors is an integer number (3681458235).

Almost surely, 2^14644921589 is an apocalyptic number.

It is an amenable number.

14644921589 is a deficient number, since it is larger than the sum of its proper divisors (80911351).

14644921589 is an equidigital number, since it uses as much as digits as its factorization.

14644921589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80911350.

The product of its digits is 2488320, while the sum is 53.

The spelling of 14644921589 in words is "fourteen billion, six hundred forty-four million, nine hundred twenty-one thousand, five hundred eighty-nine".