1266465510266 has 16 divisors (see below), whose sum is σ = 2072495714688. Its totient is φ = 575639028000.

The previous prime is 1266465510229. The next prime is 1266465510287. The reversal of 1266465510266 is 6620155646621.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 874130 + ... + 1815773.

It is an arithmetic number, because the mean of its divisors is an integer number (129530982168).

Almost surely, 2^{1266465510266} is an apocalyptic number.

1266465510266 is a deficient number, since it is larger than the sum of its proper divisors (806030204422).

1266465510266 is a wasteful number, since it uses less digits than its factorization.

1266465510266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2711317.

The product of its (nonzero) digits is 3110400, while the sum is 50.

The spelling of 1266465510266 in words is "one trillion, two hundred sixty-six billion, four hundred sixty-five million, five hundred ten thousand, two hundred sixty-six".