12266678865216 has 56 divisors (see below), whose sum is σ = 32462015973984. Its totient is φ = 4088083110400.

The previous prime is 12266678865193. The next prime is 12266678865227. The reversal of 12266678865216 is 61256887666221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5354595 + ... + 7294178.

Almost surely, 2^{12266678865216} is an apocalyptic number.

12266678865216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12266678865216 is an abundant number, since it is smaller than the sum of its proper divisors (20195337108768).

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

12266678865216 is a wasteful number, since it uses less digits than its factorization.

12266678865216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12653839 (or 12653829 counting only the distinct ones).

The product of its digits is 139345920, while the sum is 66.

The spelling of 12266678865216 in words is "twelve trillion, two hundred sixty-six billion, six hundred seventy-eight million, eight hundred sixty-five thousand, two hundred sixteen".