14231644621 has 6 divisors (see below), whose sum is σ = 14371168110. Its totient is φ = 14093462808.

The previous prime is 14231644607. The next prime is 14231644627. The reversal of 14231644621 is 12644613241.

It can be written as a sum of positive squares in only one way, i.e., 9818035396 + 4413609225 = 99086^2 + 66435^2 .

It is not a de Polignac number, because 14231644621 - 2²⁵ = 14198090189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14231644627) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 660126 + ... + 681343.

It is an arithmetic number, because the mean of its divisors is an integer number (2395194685).

Almost surely, 2^14231644621 is an apocalyptic number.

It is an amenable number.

14231644621 is a deficient number, since it is larger than the sum of its proper divisors (139523489).

14231644621 is an equidigital number, since it uses as much as digits as its factorization.

14231644621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1341675 (or 1341572 counting only the distinct ones).

The product of its digits is 27648, while the sum is 34.

The spelling of 14231644621 in words is "fourteen billion, two hundred thirty-one million, six hundred forty-four thousand, six hundred twenty-one".