13181645366 has 8 divisors (see below), whose sum is σ = 19777598064. Its totient is φ = 6589112680.

The previous prime is 13181645339. The next prime is 13181645369. The reversal of 13181645366 is 66354618131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13181645369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 845345 + ... + 860796.

It is an arithmetic number, because the mean of its divisors is an integer number (2472199758).

Almost surely, 2^13181645366 is an apocalyptic number.

13181645366 is a deficient number, since it is larger than the sum of its proper divisors (6595952698).

13181645366 is a wasteful number, since it uses less digits than its factorization.

13181645366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1710006.

The product of its digits is 311040, while the sum is 44.

The spelling of 13181645366 in words is "thirteen billion, one hundred eighty-one million, six hundred forty-five thousand, three hundred sixty-six".