266720566341 has 4 divisors (see below), whose sum is σ = 355627421792. Its totient is φ = 177813710892.

The previous prime is 266720566319. The next prime is 266720566351. The reversal of 266720566341 is 143665027662.

266720566341 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 not a de Polignac number, because 266720566341 - 2¹¹ = 266720564293 is a prime.

It is a super-2 number, since 2×266720566341² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266720566351) 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, 44453427721 + ... + 44453427726.

It is an arithmetic number, because the mean of its divisors is an integer number (88906855448).

Almost surely, 2^266720566341 is an apocalyptic number.

It is an amenable number.

266720566341 is a deficient number, since it is larger than the sum of its proper divisors (88906855451).

266720566341 is an equidigital number, since it uses as much as digits as its factorization.

266720566341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88906855450.

The product of its (nonzero) digits is 2177280, while the sum is 48.

The spelling of 266720566341 in words is "two hundred sixty-six billion, seven hundred twenty million, five hundred sixty-six thousand, three hundred forty-one".