14717523421 has 4 divisors (see below), whose sum is σ = 14743030972. Its totient is φ = 14692015872.

The previous prime is 14717523419. The next prime is 14717523439. The reversal of 14717523421 is 12432571741.

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 14134832100 + 582691321 = 118890^2 + 24139^2 .

It is a cyclic number.

It is not a de Polignac number, because 14717523421 - 2¹ = 14717523419 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 (14717520421) 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, 12752910 + ... + 12754063.

It is an arithmetic number, because the mean of its divisors is an integer number (3685757743).

Almost surely, 2^14717523421 is an apocalyptic number.

It is an amenable number.

14717523421 is a deficient number, since it is larger than the sum of its proper divisors (25507551).

14717523421 is an equidigital number, since it uses as much as digits as its factorization.

14717523421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25507550.

The product of its digits is 47040, while the sum is 37.

The spelling of 14717523421 in words is "fourteen billion, seven hundred seventeen million, five hundred twenty-three thousand, four hundred twenty-one".