14144385921 has 4 divisors (see below), whose sum is σ = 18859181232. Its totient is φ = 9429590612.

The previous prime is 14144385911. The next prime is 14144385947. The reversal of 14144385921 is 12958344141.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 14144385921 - 2⁷ = 14144385793 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (14144385911) 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, 2357397651 + ... + 2357397656.

It is an arithmetic number, because the mean of its divisors is an integer number (4714795308).

Almost surely, 2^14144385921 is an apocalyptic number.

It is an amenable number.

14144385921 is a deficient number, since it is larger than the sum of its proper divisors (4714795311).

14144385921 is an equidigital number, since it uses as much as digits as its factorization.

14144385921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4714795310.

The product of its digits is 138240, while the sum is 42.

It can be divided in two parts, 14144 and 385921, that added together give a triangular number (400065 = T₈₉₄).

The spelling of 14144385921 in words is "fourteen billion, one hundred forty-four million, three hundred eighty-five thousand, nine hundred twenty-one".