12666151265 has 8 divisors (see below), whose sum is σ = 15236546280. Its totient is φ = 10108144512.

The previous prime is 12666151237. The next prime is 12666151271. The reversal of 12666151265 is 56215166621.

12666151265 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 5862046096 + 6804105169 = 76564^2 + 82487^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 12666151265 - 2¹⁰ = 12666150241 is a prime.

It is a super-2 number, since 2×12666151265² (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, 3094814 + ... + 3098903.

It is an arithmetic number, because the mean of its divisors is an integer number (1904568285).

Almost surely, 2^12666151265 is an apocalyptic number.

It is an amenable number.

12666151265 is a deficient number, since it is larger than the sum of its proper divisors (2570395015).

12666151265 is an equidigital number, since it uses as much as digits as its factorization.

12666151265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6194131.

The product of its digits is 129600, while the sum is 41.

The spelling of 12666151265 in words is "twelve billion, six hundred sixty-six million, one hundred fifty-one thousand, two hundred sixty-five".