14016456521 has 4 divisors (see below), whose sum is σ = 14046861444. Its totient is φ = 13986051600.

The previous prime is 14016456413. The next prime is 14016456527. The reversal of 14016456521 is 12565461041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12565461041 = 7 ⋅1795065863.

It can be written as a sum of positive squares in 2 ways, for example, as 2135456521 + 11881000000 = 46211^2 + 109000^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14016456521 is a prime.

It is a super-2 number, since 2×14016456521² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14016456527) 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, 15201770 + ... + 15202691.

It is an arithmetic number, because the mean of its divisors is an integer number (3511715361).

Almost surely, 2^14016456521 is an apocalyptic number.

It is an amenable number.

14016456521 is a deficient number, since it is larger than the sum of its proper divisors (30404923).

14016456521 is an equidigital number, since it uses as much as digits as its factorization.

14016456521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30404922.

The product of its (nonzero) digits is 28800, while the sum is 35.

The spelling of 14016456521 in words is "fourteen billion, sixteen million, four hundred fifty-six thousand, five hundred twenty-one".