266676666216 has 32 divisors (see below), whose sum is σ = 669851354400. Its totient is φ = 88470930240.

The previous prime is 266676666199. The next prime is 266676666227. The reversal of 266676666216 is 612666676662.

It is a super-2 number, since 2×266676666216² (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 266676666216.

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 7 ways as a sum of consecutive naturals, for example, 26325571 + ... + 26335698.

It is an arithmetic number, because the mean of its divisors is an integer number (20932854825).

Almost surely, 2^266676666216 is an apocalyptic number.

It is an amenable number.

266676666216 is an abundant number, since it is smaller than the sum of its proper divisors (403174688184).

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

266676666216 is a wasteful number, since it uses less digits than its factorization.

266676666216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52661489 (or 52661485 counting only the distinct ones).

The product of its digits is 47029248, while the sum is 60.

The spelling of 266676666216 in words is "two hundred sixty-six billion, six hundred seventy-six million, six hundred sixty-six thousand, two hundred sixteen".