13206161666 has 16 divisors (see below), whose sum is σ = 20688101568. Its totient is φ = 6310616400.

The previous prime is 13206161653. The next prime is 13206161669. The reversal of 13206161666 is 66616160231.

It is not an unprimeable number, because it can be changed into a prime (13206161669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67220 + ... + 175871.

It is an arithmetic number, because the mean of its divisors is an integer number (1293006348).

Almost surely, 2^13206161666 is an apocalyptic number.

13206161666 is a deficient number, since it is larger than the sum of its proper divisors (7481939902).

13206161666 is a wasteful number, since it uses less digits than its factorization.

13206161666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244297.

The product of its (nonzero) digits is 46656, while the sum is 38.

The spelling of 13206161666 in words is "thirteen billion, two hundred six million, one hundred sixty-one thousand, six hundred sixty-six".