266004213340205 has 8 divisors (see below), whose sum is σ = 322791629671800. Its totient is φ = 210412321563136.

The previous prime is 266004213340181. The next prime is 266004213340223. The reversal of 266004213340205 is 502043312400662.

It can be written as a sum of positive squares in 4 ways, for example, as 47451335811049 + 218552877529156 = 6888493^2 + 14783534^2 .

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 266004213340205 - 2¹² = 266004213336109 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 298881138140 + ... + 298881139029.

It is an arithmetic number, because the mean of its divisors is an integer number (40348953708975).

Almost surely, 2^{266004213340205} is an apocalyptic number.

It is an amenable number.

266004213340205 is a deficient number, since it is larger than the sum of its proper divisors (56787416331595).

266004213340205 is an equidigital number, since it uses as much as digits as its factorization.

266004213340205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597762277263.

The product of its (nonzero) digits is 207360, while the sum is 38.

Adding to 266004213340205 its reverse (502043312400662), we get a palindrome (768047525740867).

The spelling of 266004213340205 in words is "two hundred sixty-six trillion, four billion, two hundred thirteen million, three hundred forty thousand, two hundred five".