1266056826216 has 64 divisors (see below), whose sum is σ = 3895559472000. Its totient is φ = 333905096448.

The previous prime is 1266056826197. The next prime is 1266056826227. The reversal of 1266056826216 is 6126286506621.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 289845991 + ... + 289850358.

It is an arithmetic number, because the mean of its divisors is an integer number (60868116750).

Almost surely, 2^{1266056826216} is an apocalyptic number.

It is an amenable number.

1266056826216 is an abundant number, since it is smaller than the sum of its proper divisors (2629502645784).

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

1266056826216 is a wasteful number, since it uses less digits than its factorization.

1266056826216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579696378 (or 579696374 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 51.

The spelling of 1266056826216 in words is "one trillion, two hundred sixty-six billion, fifty-six million, eight hundred twenty-six thousand, two hundred sixteen".