12665843359 has 16 divisors (see below), whose sum is σ = 13787405632. Its totient is φ = 11565566208.

The previous prime is 12665843357. The next prime is 12665843401. The reversal of 12665843359 is 95334856621.

It is a cyclic number.

It is not a de Polignac number, because 12665843359 - 2¹ = 12665843357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12665843357) 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, 1378609 + ... + 1387765.

It is an arithmetic number, because the mean of its divisors is an integer number (861712852).

Almost surely, 2^12665843359 is an apocalyptic number.

12665843359 is a deficient number, since it is larger than the sum of its proper divisors (1121562273).

12665843359 is a wasteful number, since it uses less digits than its factorization.

12665843359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10306.

The product of its digits is 4665600, while the sum is 52.

The spelling of 12665843359 in words is "twelve billion, six hundred sixty-five million, eight hundred forty-three thousand, three hundred fifty-nine".