266613065362666 has 16 divisors (see below), whose sum is σ = 444507546369888. Its totient is φ = 118901195530000.

The previous prime is 266613065362663. The next prime is 266613065362769. The reversal of 266613065362666 is 666263560316662.

It is a junction number, because it is equal to n+sod(n) for n = 266613065362598 and 266613065362607.

It is not an unprimeable number, because it can be changed into a prime (266613065362663) 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, 114328071460 + ... + 114328073791.

It is an arithmetic number, because the mean of its divisors is an integer number (27781721648118).

Almost surely, 2^{266613065362666} is an apocalyptic number.

266613065362666 is a deficient number, since it is larger than the sum of its proper divisors (177894481007222).

266613065362666 is a wasteful number, since it uses less digits than its factorization.

266613065362666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228656145317.

The product of its (nonzero) digits is 302330880, while the sum is 64.

The spelling of 266613065362666 in words is "two hundred sixty-six trillion, six hundred thirteen billion, sixty-five million, three hundred sixty-two thousand, six hundred sixty-six".