12665361066 has 16 divisors (see below), whose sum is σ = 25386155904. Its totient is φ = 4212548064.

The previous prime is 12665361041. The next prime is 12665361073. The reversal of 12665361066 is 66016356621.

12665361066 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12665361066² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

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, 2306770 + ... + 2312253.

It is an arithmetic number, because the mean of its divisors is an integer number (1586634744).

Almost surely, 2^12665361066 is an apocalyptic number.

12665361066 is an abundant number, since it is smaller than the sum of its proper divisors (12720794838).

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

12665361066 is a wasteful number, since it uses less digits than its factorization.

12665361066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4619485.

The product of its (nonzero) digits is 233280, while the sum is 42.

The spelling of 12665361066 in words is "twelve billion, six hundred sixty-five million, three hundred sixty-one thousand, sixty-six".