13216081668 has 24 divisors (see below), whose sum is σ = 30839665920. Its totient is φ = 4405054560.

The previous prime is 13216081591. The next prime is 13216081699. The reversal of 13216081668 is 86618061231.

13216081668 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 202138 + ... + 259406.

It is an arithmetic number, because the mean of its divisors is an integer number (1284986080).

Almost surely, 2^13216081668 is an apocalyptic number.

It is an amenable number.

13216081668 is an abundant number, since it is smaller than the sum of its proper divisors (17623584252).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13216081668 is a wasteful number, since it uses less digits than its factorization.

13216081668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76507 (or 76505 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 42.

The spelling of 13216081668 in words is "thirteen billion, two hundred sixteen million, eighty-one thousand, six hundred sixty-eight".