14028864021 has 6 divisors (see below), whose sum is σ = 20263914710. Its totient is φ = 9352576008.

The previous prime is 14028863971. The next prime is 14028864029. The reversal of 14028864021 is 12046882041.

14028864021 is a `hidden beast` number, since 1 + 4 + 0 + 2 + 8 + 8 + 640 + 2 + 1 = 666.

14028864021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 12324330225 + 1704533796 = 111015^2 + 41286^2 .

It is not a de Polignac number, because 14028864021 - 2¹⁰ = 14028862997 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 (14028864029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 779381326 + ... + 779381343.

Almost surely, 2^14028864021 is an apocalyptic number.

It is an amenable number.

14028864021 is a deficient number, since it is larger than the sum of its proper divisors (6235050689).

14028864021 is a wasteful number, since it uses less digits than its factorization.

14028864021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1558762675 (or 1558762672 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The spelling of 14028864021 in words is "fourteen billion, twenty-eight million, eight hundred sixty-four thousand, twenty-one".