13218391495 has 4 divisors (see below), whose sum is σ = 15862069800. Its totient is φ = 10574713192.

The previous prime is 13218391493. The next prime is 13218391519. The reversal of 13218391495 is 59419381231.

13218391495 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 13218391495 - 2¹ = 13218391493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13218391493) 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, 1321839145 + ... + 1321839154.

It is an arithmetic number, because the mean of its divisors is an integer number (3965517450).

Almost surely, 2^13218391495 is an apocalyptic number.

13218391495 is a deficient number, since it is larger than the sum of its proper divisors (2643678305).

13218391495 is an equidigital number, since it uses as much as digits as its factorization.

13218391495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2643678304.

The product of its digits is 233280, while the sum is 46.

The spelling of 13218391495 in words is "thirteen billion, two hundred eighteen million, three hundred ninety-one thousand, four hundred ninety-five".