266666666666670 has 48 divisors (see below), whose sum is σ = 693506364801120. Its totient is φ = 71093364293952.

The previous prime is 266666666666669. The next prime is 266666666666677. The reversal of 266666666666670 is 76666666666662.

266666666666670 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×266666666666670² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 266666666666670.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266666666666677) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 369362725 + ... + 370083984.

It is an arithmetic number, because the mean of its divisors is an integer number (14448049266690).

Almost surely, 2^{266666666666670} is an apocalyptic number.

266666666666670 is an abundant number, since it is smaller than the sum of its proper divisors (426839698134450).

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

266666666666670 is a wasteful number, since it uses less digits than its factorization.

266666666666670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 739450729 (or 739450726 counting only the distinct ones).

The product of its (nonzero) digits is 30474952704, while the sum is 81.

The spelling of 266666666666670 in words is "two hundred sixty-six trillion, six hundred sixty-six billion, six hundred sixty-six million, six hundred sixty-six thousand, six hundred seventy".