266061162165317 has 2 divisors, whose sum is σ = 266061162165318. Its totient is φ = 266061162165316.

The previous prime is 266061162165313. The next prime is 266061162165349. The reversal of 266061162165317 is 713561261160662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 260443887699076 + 5617274466241 = 16138274^2 + 2370079^2 .

It is a cyclic number.

It is not a de Polignac number, because 266061162165317 - 2² = 266061162165313 is a prime.

It is a super-2 number, since 2×266061162165317² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (266061162165313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133030581082658 + 133030581082659.

It is an arithmetic number, because the mean of its divisors is an integer number (133030581082659).

Almost surely, 2^{266061162165317} is an apocalyptic number.

It is an amenable number.

266061162165317 is a deficient number, since it is larger than the sum of its proper divisors (1).

266061162165317 is an equidigital number, since it uses as much as digits as its factorization.

266061162165317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3265920, while the sum is 53.

The spelling of 266061162165317 in words is "two hundred sixty-six trillion, sixty-one billion, one hundred sixty-two million, one hundred sixty-five thousand, three hundred seventeen".