133566211555241 has 2 divisors, whose sum is σ = 133566211555242. Its totient is φ = 133566211555240.

The previous prime is 133566211555219. The next prime is 133566211555277. The reversal of 133566211555241 is 142555112665331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129868724832016 + 3697486723225 = 11395996^2 + 1922885^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133566211555241 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133566211555241.

It is not a weakly prime, because it can be changed into another prime (133566211515241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66783105777620 + 66783105777621.

It is an arithmetic number, because the mean of its divisors is an integer number (66783105777621).

Almost surely, 2^{133566211555241} is an apocalyptic number.

It is an amenable number.

133566211555241 is a deficient number, since it is larger than the sum of its proper divisors (1).

133566211555241 is an equidigital number, since it uses as much as digits as its factorization.

133566211555241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3240000, while the sum is 50.

The spelling of 133566211555241 in words is "one hundred thirty-three trillion, five hundred sixty-six billion, two hundred eleven million, five hundred fifty-five thousand, two hundred forty-one".