13173773666 has 16 divisors (see below), whose sum is σ = 19804738464. Its totient is φ = 6572210304.

The previous prime is 13173773663. The next prime is 13173773677. The reversal of 13173773666 is 66637737131.

13173773666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13173773663) 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 7 ways as a sum of consecutive naturals, for example, 2315261 + ... + 2320943.

It is an arithmetic number, because the mean of its divisors is an integer number (1237796154).

Almost surely, 2^13173773666 is an apocalyptic number.

13173773666 is a deficient number, since it is larger than the sum of its proper divisors (6630964798).

13173773666 is a wasteful number, since it uses less digits than its factorization.

13173773666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8065.

The product of its digits is 2000376, while the sum is 50.

The spelling of 13173773666 in words is "thirteen billion, one hundred seventy-three million, seven hundred seventy-three thousand, six hundred sixty-six".