14721613644 has 24 divisors (see below), whose sum is σ = 35149280320. Its totient is φ = 4793083344.

The previous prime is 14721613639. The next prime is 14721613717. The reversal of 14721613644 is 44631612741.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14264614 + ... + 14265645.

Almost surely, 2^14721613644 is an apocalyptic number.

It is an amenable number.

14721613644 is an abundant number, since it is smaller than the sum of its proper divisors (20427666676).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

14721613644 is a wasteful number, since it uses less digits than its factorization.

14721613644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28530309 (or 28530307 counting only the distinct ones).

The product of its digits is 96768, while the sum is 39.

The spelling of 14721613644 in words is "fourteen billion, seven hundred twenty-one million, six hundred thirteen thousand, six hundred forty-four".