1266681233286 has 192 divisors, whose sum is σ = 3272285952000. Its totient is φ = 353815104384.

The previous prime is 1266681233263. The next prime is 1266681233291. The reversal of 1266681233286 is 6823321866621.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 346180525 + ... + 346184183.

It is an arithmetic number, because the mean of its divisors is an integer number (17043156000).

Almost surely, 2^{1266681233286} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1266681233286, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1636142976000).

1266681233286 is an abundant number, since it is smaller than the sum of its proper divisors (2005604718714).

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

1266681233286 is a wasteful number, since it uses less digits than its factorization.

1266681233286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4928 (or 4911 counting only the distinct ones).

The product of its digits is 5971968, while the sum is 54.

The spelling of 1266681233286 in words is "one trillion, two hundred sixty-six billion, six hundred eighty-one million, two hundred thirty-three thousand, two hundred eighty-six".