12666880022646 has 8 divisors (see below), whose sum is σ = 25333760045304. Its totient is φ = 4222293340880.

The previous prime is 12666880022591. The next prime is 12666880022653. The reversal of 12666880022646 is 64622008866621.

12666880022646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

12666880022646 is an admirable number.

It is a super-3 number, since 3×12666880022646³ (a number of 40 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1055573335215 + ... + 1055573335226.

It is an arithmetic number, because the mean of its divisors is an integer number (3166720005663).

Almost surely, 2^{12666880022646} is an apocalyptic number.

12666880022646 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.

12666880022646 is a wasteful number, since it uses less digits than its factorization.

12666880022646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2111146670446.

The product of its (nonzero) digits is 15925248, while the sum is 57.

The spelling of 12666880022646 in words is "twelve trillion, six hundred sixty-six billion, eight hundred eighty million, twenty-two thousand, six hundred forty-six".