14147333721 has 20 divisors (see below), whose sum is σ = 21200377572. Its totient is φ = 9401786208.

The previous prime is 14147333719. The next prime is 14147333743. The reversal of 14147333721 is 12733374141.

It can be written as a sum of positive squares in 2 ways, for example, as 3240455625 + 10906878096 = 56925^2 + 104436^2 .

It is not a de Polignac number, because 14147333721 - 2¹ = 14147333719 is a prime.

It is not an unprimeable number, because it can be changed into a prime (14147333771) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 249810 + ... + 301163.

Almost surely, 2^14147333721 is an apocalyptic number.

It is an amenable number.

14147333721 is a deficient number, since it is larger than the sum of its proper divisors (7053043851).

14147333721 is an equidigital number, since it uses as much as digits as its factorization.

14147333721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551302 (or 551293 counting only the distinct ones).

The product of its digits is 42336, while the sum is 36.

The spelling of 14147333721 in words is "fourteen billion, one hundred forty-seven million, three hundred thirty-three thousand, seven hundred twenty-one".