13216245666 has 32 divisors (see below), whose sum is σ = 28890633408. Its totient is φ = 4005840960.

The previous prime is 13216245649. The next prime is 13216245667. The reversal of 13216245666 is 66654261231.

It is not an unprimeable number, because it can be changed into a prime (13216245667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1259245 + ... + 1269696.

It is an arithmetic number, because the mean of its divisors is an integer number (902832294).

Almost surely, 2^13216245666 is an apocalyptic number.

13216245666 is an abundant number, since it is smaller than the sum of its proper divisors (15674387742).

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

13216245666 is a wasteful number, since it uses less digits than its factorization.

13216245666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2529026.

The product of its digits is 311040, while the sum is 42.

The spelling of 13216245666 in words is "thirteen billion, two hundred sixteen million, two hundred forty-five thousand, six hundred sixty-six".