266104621621141 has 2 divisors, whose sum is σ = 266104621621142. Its totient is φ = 266104621621140.

The previous prime is 266104621621099. The next prime is 266104621621247. The reversal of 266104621621141 is 141126126401662.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 220839364242225 + 45265257378916 = 14860665^2 + 6727946^2 .

It is a cyclic number.

It is not a de Polignac number, because 266104621621141 - 2²¹ = 266104619523989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (266104621621441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133052310810570 + 133052310810571.

It is an arithmetic number, because the mean of its divisors is an integer number (133052310810571).

Almost surely, 2^{266104621621141} is an apocalyptic number.

It is an amenable number.

266104621621141 is a deficient number, since it is larger than the sum of its proper divisors (1).

266104621621141 is an equidigital number, since it uses as much as digits as its factorization.

266104621621141 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 165888, while the sum is 43.

The spelling of 266104621621141 in words is "two hundred sixty-six trillion, one hundred four billion, six hundred twenty-one million, six hundred twenty-one thousand, one hundred forty-one".