13186966066 has 16 divisors (see below), whose sum is σ = 19857182904. Its totient is φ = 6567934464.

The previous prime is 13186966061. The next prime is 13186966081. The reversal of 13186966066 is 66066968131.

It can be written as a sum of positive squares in 4 ways, for example, as 9451922841 + 3735043225 = 97221^2 + 61115^2 .

It is not an unprimeable number, because it can be changed into a prime (13186966061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1030926 + ... + 1043638.

Almost surely, 2^13186966066 is an apocalyptic number.

13186966066 is a deficient number, since it is larger than the sum of its proper divisors (6670216838).

13186966066 is a wasteful number, since it uses less digits than its factorization.

13186966066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14685.

The product of its (nonzero) digits is 1679616, while the sum is 52.

The spelling of 13186966066 in words is "thirteen billion, one hundred eighty-six million, nine hundred sixty-six thousand, sixty-six".