266680953813 has 8 divisors (see below), whose sum is σ = 357703795008. Its totient is φ = 176722707584.

The previous prime is 266680953797. The next prime is 266680953881. The reversal of 266680953813 is 318359086662.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 266680953813 - 2⁴ = 266680953797 is a prime.

It is a super-2 number, since 2×266680953813² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266680953013) 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, 266148156 + ... + 266149157.

It is an arithmetic number, because the mean of its divisors is an integer number (44712974376).

Almost surely, 2^266680953813 is an apocalyptic number.

It is an amenable number.

266680953813 is a deficient number, since it is larger than the sum of its proper divisors (91022841195).

266680953813 is a wasteful number, since it uses less digits than its factorization.

266680953813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532297483.

The product of its (nonzero) digits is 11197440, while the sum is 57.

The spelling of 266680953813 in words is "two hundred sixty-six billion, six hundred eighty million, nine hundred fifty-three thousand, eight hundred thirteen".