266688886662 has 48 divisors (see below), whose sum is σ = 630466059600. Its totient is φ = 80800646400.

The previous prime is 266688886649. The next prime is 266688886691.

266688886662 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×266688886662² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 1042962 + ... + 1273242.

It is an arithmetic number, because the mean of its divisors is an integer number (13134709575).

Almost surely, 2^266688886662 is an apocalyptic number.

266688886662 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

266688886662 is an abundant number, since it is smaller than the sum of its proper divisors (363777172938).

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

266688886662 is a wasteful number, since it uses less digits than its factorization.

266688886662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236149 (or 236146 counting only the distinct ones).

The product of its digits is 764411904, while the sum is 72.

The spelling of 266688886662 in words is "two hundred sixty-six billion, six hundred eighty-eight million, eight hundred eighty-six thousand, six hundred sixty-two".