266216093849 has 2 divisors, whose sum is σ = 266216093850. Its totient is φ = 266216093848.

The previous prime is 266216093777. The next prime is 266216093863. The reversal of 266216093849 is 948390612662.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 170011905625 + 96204188224 = 412325^2 + 310168^2 .

It is a cyclic number.

It is not a de Polignac number, because 266216093849 - 2²⁰ = 266215045273 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 266216093794 and 266216093803.

It is not a weakly prime, because it can be changed into another prime (266216023849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133108046924 + 133108046925.

It is an arithmetic number, because the mean of its divisors is an integer number (133108046925).

Almost surely, 2^266216093849 is an apocalyptic number.

It is an amenable number.

266216093849 is a deficient number, since it is larger than the sum of its proper divisors (1).

266216093849 is an equidigital number, since it uses as much as digits as its factorization.

266216093849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6718464, while the sum is 56.

The spelling of 266216093849 in words is "two hundred sixty-six billion, two hundred sixteen million, ninety-three thousand, eight hundred forty-nine".