18348642322717 has 4 divisors (see below), whose sum is σ = 20969876940256. Its totient is φ = 15727407705180.

The previous prime is 18348642322711. The next prime is 18348642322789. The reversal of 18348642322717 is 71722324684381.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18348642322717 - 2²³ = 18348633934109 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 (18348642322711) 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 3 ways as a sum of consecutive naturals, for example, 1310617308759 + ... + 1310617308772.

It is an arithmetic number, because the mean of its divisors is an integer number (5242469235064).

Almost surely, 2^{18348642322717} is an apocalyptic number.

It is an amenable number.

18348642322717 is a deficient number, since it is larger than the sum of its proper divisors (2621234617539).

18348642322717 is an equidigital number, since it uses as much as digits as its factorization.

18348642322717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2621234617538.

The product of its digits is 21676032, while the sum is 58.

The spelling of 18348642322717 in words is "eighteen trillion, three hundred forty-eight billion, six hundred forty-two million, three hundred twenty-two thousand, seven hundred seventeen".