266686286676 has 24 divisors (see below), whose sum is σ = 658872002880. Its totient is φ = 83666285952.

The previous prime is 266686286639. The next prime is 266686286677. The reversal of 266686286676 is 676682686662.

266686286676 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×266686286676² (a number of 24 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 266686286676.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266686286677) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 653642656 + ... + 653643063.

It is an arithmetic number, because the mean of its divisors is an integer number (27453000120).

Almost surely, 2^266686286676 is an apocalyptic number.

It is an amenable number.

266686286676 is an abundant number, since it is smaller than the sum of its proper divisors (392185716204).

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

266686286676 is a wasteful number, since it uses less digits than its factorization.

266686286676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1307285743 (or 1307285741 counting only the distinct ones).

The product of its digits is 501645312, while the sum is 69.

The spelling of 266686286676 in words is "two hundred sixty-six billion, six hundred eighty-six million, two hundred eighty-six thousand, six hundred seventy-six".