12665111682 has 8 divisors (see below), whose sum is σ = 25330223376. Its totient is φ = 4221703892.

The previous prime is 12665111671. The next prime is 12665111687. The reversal of 12665111682 is 28611156621.

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

12665111682 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 12665111682.

It is not an unprimeable number, because it can be changed into a prime (12665111687) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1055425968 + ... + 1055425979.

It is an arithmetic number, because the mean of its divisors is an integer number (3166277922).

Almost surely, 2^12665111682 is an apocalyptic number.

12665111682 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12665111682 is a wasteful number, since it uses less digits than its factorization.

12665111682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2110851952.

The product of its digits is 34560, while the sum is 39.

The spelling of 12665111682 in words is "twelve billion, six hundred sixty-five million, one hundred eleven thousand, six hundred eighty-two".