14006432565421 has 4 divisors (see below), whose sum is σ = 14024006509212. Its totient is φ = 13988858621632.

The previous prime is 14006432565407. The next prime is 14006432565449. The reversal of 14006432565421 is 12456523460041.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8628254137321 + 5378178428100 = 2937389^2 + 2319090^2 .

It is a cyclic number.

It is not a de Polignac number, because 14006432565421 - 2²⁹ = 14005895694509 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 (14006432565221) 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, 8786970700 + ... + 8786972293.

It is an arithmetic number, because the mean of its divisors is an integer number (3506001627303).

Almost surely, 2^{14006432565421} is an apocalyptic number.

It is an amenable number.

14006432565421 is a deficient number, since it is larger than the sum of its proper divisors (17573943791).

14006432565421 is an equidigital number, since it uses as much as digits as its factorization.

14006432565421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17573943790.

The product of its (nonzero) digits is 691200, while the sum is 43.

The spelling of 14006432565421 in words is "fourteen trillion, six billion, four hundred thirty-two million, five hundred sixty-five thousand, four hundred twenty-one".