266488113777866 has 32 divisors (see below), whose sum is σ = 429567367625280. Its totient is φ = 123533161019136.

The previous prime is 266488113777803. The next prime is 266488113777881. The reversal of 266488113777866 is 668777311884662.

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, 241165061 + ... + 242267543.

It is an arithmetic number, because the mean of its divisors is an integer number (13423980238290).

Almost surely, 2^{266488113777866} is an apocalyptic number.

266488113777866 is a deficient number, since it is larger than the sum of its proper divisors (163079253847414).

266488113777866 is a wasteful number, since it uses less digits than its factorization.

266488113777866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1208678.

The product of its digits is 5462360064, while the sum is 80.

The spelling of 266488113777866 in words is "two hundred sixty-six trillion, four hundred eighty-eight billion, one hundred thirteen million, seven hundred seventy-seven thousand, eight hundred sixty-six".