12666340359 has 16 divisors (see below), whose sum is σ = 18975794400. Its totient is φ = 8349346368.

The previous prime is 12666340321. The next prime is 12666340381. The reversal of 12666340359 is 95304366621.

It is not a de Polignac number, because 12666340359 - 2⁸ = 12666340103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12666340319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2633124 + ... + 2637929.

It is an arithmetic number, because the mean of its divisors is an integer number (1185987150).

Almost surely, 2^12666340359 is an apocalyptic number.

12666340359 is a deficient number, since it is larger than the sum of its proper divisors (6309454041).

12666340359 is an equidigital number, since it uses as much as digits as its factorization.

12666340359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5271151 (or 5271145 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 45.

The spelling of 12666340359 in words is "twelve billion, six hundred sixty-six million, three hundred forty thousand, three hundred fifty-nine".