266006663506019 has 2 divisors, whose sum is σ = 266006663506020. Its totient is φ = 266006663506018.

The previous prime is 266006663505971. The next prime is 266006663506223. The reversal of 266006663506019 is 910605366600662.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 266006663506019 - 2⁸ = 266006663505763 is a prime.

It is a super-2 number, since 2×266006663506019² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (266006663506319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133003331753009 + 133003331753010.

It is an arithmetic number, because the mean of its divisors is an integer number (133003331753010).

Almost surely, 2^{266006663506019} is an apocalyptic number.

266006663506019 is a deficient number, since it is larger than the sum of its proper divisors (1).

266006663506019 is an equidigital number, since it uses as much as digits as its factorization.

266006663506019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12597120, while the sum is 56.

The spelling of 266006663506019 in words is "two hundred sixty-six trillion, six billion, six hundred sixty-three million, five hundred six thousand, nineteen".