14664558817 has 4 divisors (see below), whose sum is σ = 14941248660. Its totient is φ = 14387868976.

The previous prime is 14664558767. The next prime is 14664558827. The reversal of 14664558817 is 71885546641.

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 11603813841 + 3060744976 = 107721^2 + 55324^2 .

It is a cyclic number.

It is not a de Polignac number, because 14664558817 - 2¹¹ = 14664556769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14664558827) 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, 138344842 + ... + 138344947.

It is an arithmetic number, because the mean of its divisors is an integer number (3735312165).

Almost surely, 2^14664558817 is an apocalyptic number.

It is an amenable number.

14664558817 is a deficient number, since it is larger than the sum of its proper divisors (276689843).

14664558817 is an equidigital number, since it uses as much as digits as its factorization.

14664558817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276689842.

The product of its digits is 6451200, while the sum is 55.

The spelling of 14664558817 in words is "fourteen billion, six hundred sixty-four million, five hundred fifty-eight thousand, eight hundred seventeen".