266666666666 has 16 divisors (see below), whose sum is σ = 404138782080. Its totient is φ = 131956211520.

The previous prime is 266666666663. The next prime is 266666666711. The reversal of 266666666666 is 666666666662.

266666666666 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 2×266666666666² (a number of 24 digits) contains 22 as substring.

266666666666 is a modest number, since divided by 666666 gives 266666 as remainder.

It is a plaindrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 266666666596 and 266666666605.

It is not an unprimeable number, because it can be changed into a prime (266666666663) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 401570 + ... + 833421.

It is an arithmetic number, because the mean of its divisors is an integer number (25258673880).

Almost surely, 2^266666666666 is an apocalyptic number.

266666666666 is a deficient number, since it is larger than the sum of its proper divisors (137472115414).

266666666666 is a wasteful number, since it uses less digits than its factorization.

266666666666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1236109.

The product of its digits is 725594112, while the sum is 68.

The spelling of 266666666666 in words is "two hundred sixty-six billion, six hundred sixty-six million, six hundred sixty-six thousand, six hundred sixty-six".