266749406888 has 16 divisors (see below), whose sum is σ = 500394592500. Its totient is φ = 133310848896.

The previous prime is 266749406857. The next prime is 266749406893. The reversal of 266749406888 is 888604947662.

266749406888 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 243504745444 + 23244661444 = 493462^2 + 152462^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7964063 + ... + 7997486.

Almost surely, 2^266749406888 is an apocalyptic number.

It is an amenable number.

266749406888 is a deficient number, since it is larger than the sum of its proper divisors (233645185612).

266749406888 is a wasteful number, since it uses less digits than its factorization.

266749406888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15963644 (or 15963640 counting only the distinct ones).

The product of its (nonzero) digits is 222953472, while the sum is 68.

The spelling of 266749406888 in words is "two hundred sixty-six billion, seven hundred forty-nine million, four hundred six thousand, eight hundred eighty-eight".