266050251749 has 2 divisors, whose sum is σ = 266050251750. Its totient is φ = 266050251748.

The previous prime is 266050251743. The next prime is 266050251767. The reversal of 266050251749 is 947152050662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 183878016100 + 82172235649 = 428810^2 + 286657^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-266050251749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (266050251743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133025125874 + 133025125875.

It is an arithmetic number, because the mean of its divisors is an integer number (133025125875).

Almost surely, 2^266050251749 is an apocalyptic number.

It is an amenable number.

266050251749 is a deficient number, since it is larger than the sum of its proper divisors (1).

266050251749 is an equidigital number, since it uses as much as digits as its factorization.

266050251749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 907200, while the sum is 47.

The spelling of 266050251749 in words is "two hundred sixty-six billion, fifty million, two hundred fifty-one thousand, seven hundred forty-nine".