266560060252205 has 4 divisors (see below), whose sum is σ = 319872072302652. Its totient is φ = 213248048201760.

The previous prime is 266560060252133. The next prime is 266560060252237. The reversal of 266560060252205 is 502252060065662.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 39171213033481 + 227388847218724 = 6258691^2 + 15079418^2 .

It is not a de Polignac number, because 266560060252205 - 2²⁶ = 266559993143341 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 266560060252205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26656006025216 + ... + 26656006025225.

It is an arithmetic number, because the mean of its divisors is an integer number (79968018075663).

Almost surely, 2^{266560060252205} is an apocalyptic number.

It is an amenable number.

266560060252205 is a deficient number, since it is larger than the sum of its proper divisors (53312012050447).

266560060252205 is an equidigital number, since it uses as much as digits as its factorization.

266560060252205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53312012050446.

The product of its (nonzero) digits is 2592000, while the sum is 47.

The spelling of 266560060252205 in words is "two hundred sixty-six trillion, five hundred sixty billion, sixty million, two hundred fifty-two thousand, two hundred five".