1266633266828 has 12 divisors (see below), whose sum is σ = 2216652900000. Its totient is φ = 633303866832.

The previous prime is 1266633266807. The next prime is 1266633266837. The reversal of 1266633266828 is 8286623366621.

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, 2966651 + ... + 3366642.

It is an arithmetic number, because the mean of its divisors is an integer number (184721075000).

Almost surely, 2^{1266633266828} is an apocalyptic number.

It is an amenable number.

1266633266828 is a deficient number, since it is larger than the sum of its proper divisors (950019633172).

1266633266828 is a wasteful number, since it uses less digits than its factorization.

1266633266828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6383296 (or 6383294 counting only the distinct ones).

The product of its digits is 35831808, while the sum is 59.

The spelling of 1266633266828 in words is "one trillion, two hundred sixty-six billion, six hundred thirty-three million, two hundred sixty-six thousand, eight hundred twenty-eight".