266742507122041 has 2 divisors, whose sum is σ = 266742507122042. Its totient is φ = 266742507122040.

The previous prime is 266742507121963. The next prime is 266742507122177. The reversal of 266742507122041 is 140221705247662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 139506453351225 + 127236053770816 = 11811285^2 + 11279896^2 .

It is a cyclic number.

It is not a de Polignac number, because 266742507122041 - 2⁷ = 266742507121913 is a prime.

It is not a weakly prime, because it can be changed into another prime (266742507126041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133371253561020 + 133371253561021.

It is an arithmetic number, because the mean of its divisors is an integer number (133371253561021).

Almost surely, 2^{266742507122041} is an apocalyptic number.

It is an amenable number.

266742507122041 is a deficient number, since it is larger than the sum of its proper divisors (1).

266742507122041 is an equidigital number, since it uses as much as digits as its factorization.

266742507122041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2257920, while the sum is 49.

The spelling of 266742507122041 in words is "two hundred sixty-six trillion, seven hundred forty-two billion, five hundred seven million, one hundred twenty-two thousand, forty-one".