266666613361 has 4 divisors (see below), whose sum is σ = 266725575792. Its totient is φ = 266607650932.

The previous prime is 266666613331. The next prime is 266666613397. The reversal of 266666613361 is 163316666662.

266666613361 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-266666613361 is a prime.

It is a super-2 number, since 2×266666613361² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 266666613299 and 266666613308.

It is not an unprimeable number, because it can be changed into a prime (266666613331) 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 3 ways as a sum of consecutive naturals, for example, 29474431 + ... + 29483476.

It is an arithmetic number, because the mean of its divisors is an integer number (66681393948).

Almost surely, 2^266666613361 is an apocalyptic number.

It is an amenable number.

266666613361 is a deficient number, since it is larger than the sum of its proper divisors (58962431).

266666613361 is an equidigital number, since it uses as much as digits as its factorization.

266666613361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58962430.

The product of its digits is 5038848, while the sum is 52.

The spelling of 266666613361 in words is "two hundred sixty-six billion, six hundred sixty-six million, six hundred thirteen thousand, three hundred sixty-one".