266065383869 has 2 divisors, whose sum is σ = 266065383870. Its totient is φ = 266065383868.

The previous prime is 266065383851. The next prime is 266065383923. The reversal of 266065383869 is 968383560662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 265805206969 + 260176900 = 515563^2 + 16130^2 .

It is a cyclic number.

It is not a de Polignac number, because 266065383869 - 2¹² = 266065379773 is a prime.

It is a super-2 number, since 2×266065383869² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (266065383809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133032691934 + 133032691935.

It is an arithmetic number, because the mean of its divisors is an integer number (133032691935).

Almost surely, 2^266065383869 is an apocalyptic number.

It is an amenable number.

266065383869 is a deficient number, since it is larger than the sum of its proper divisors (1).

266065383869 is an equidigital number, since it uses as much as digits as its factorization.

266065383869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 67184640, while the sum is 62.

The spelling of 266065383869 in words is "two hundred sixty-six billion, sixty-five million, three hundred eighty-three thousand, eight hundred sixty-nine".