1266800011447 has 8 divisors (see below), whose sum is σ = 1335867735600. Its totient is φ = 1197971691264.

The previous prime is 1266800011417. The next prime is 1266800011511. The reversal of 1266800011447 is 7441100086621.

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

It is a cyclic number.

It is not a de Polignac number, because 1266800011447 - 2¹¹ = 1266800009399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1266800011417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59840122 + ... + 59861287.

It is an arithmetic number, because the mean of its divisors is an integer number (166983466950).

Almost surely, 2^{1266800011447} is an apocalyptic number.

1266800011447 is a deficient number, since it is larger than the sum of its proper divisors (69067724153).

1266800011447 is a wasteful number, since it uses less digits than its factorization.

1266800011447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119701985.

The product of its (nonzero) digits is 64512, while the sum is 40.

The spelling of 1266800011447 in words is "one trillion, two hundred sixty-six billion, eight hundred million, eleven thousand, four hundred forty-seven".