266942247149 has 2 divisors, whose sum is σ = 266942247150. Its totient is φ = 266942247148.

The previous prime is 266942247133. The next prime is 266942247163. The reversal of 266942247149 is 941742249662.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 266885892100 + 56355049 = 516610^2 + 7507^2 .

It is a cyclic number.

It is not a de Polignac number, because 266942247149 - 2⁴ = 266942247133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 266942247094 and 266942247103.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (266942246149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133471123574 + 133471123575.

It is an arithmetic number, because the mean of its divisors is an integer number (133471123575).

Almost surely, 2^266942247149 is an apocalyptic number.

It is an amenable number.

266942247149 is a deficient number, since it is larger than the sum of its proper divisors (1).

266942247149 is an equidigital number, since it uses as much as digits as its factorization.

266942247149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10450944, while the sum is 56.

The spelling of 266942247149 in words is "two hundred sixty-six billion, nine hundred forty-two million, two hundred forty-seven thousand, one hundred forty-nine".