12646563366 has 8 divisors (see below), whose sum is σ = 25293126744. Its totient is φ = 4215521120.

The previous prime is 12646563337. The next prime is 12646563379. The reversal of 12646563366 is 66336564621.

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

12646563366 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1053880275 + ... + 1053880286.

It is an arithmetic number, because the mean of its divisors is an integer number (3161640843).

Almost surely, 2^12646563366 is an apocalyptic number.

12646563366 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.

12646563366 is a wasteful number, since it uses less digits than its factorization.

12646563366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2107760566.

The product of its digits is 2799360, while the sum is 48.

The spelling of 12646563366 in words is "twelve billion, six hundred forty-six million, five hundred sixty-three thousand, three hundred sixty-six".