266004213340247 has 2 divisors, whose sum is σ = 266004213340248. Its totient is φ = 266004213340246.

The previous prime is 266004213340223. The next prime is 266004213340259. The reversal of 266004213340247 is 742043312400662.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 266004213340247 - 2²⁸ = 266003944904791 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 266004213340198 and 266004213340207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (266004213340267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133002106670123 + 133002106670124.

It is an arithmetic number, because the mean of its divisors is an integer number (133002106670124).

Almost surely, 2^{266004213340247} is an apocalyptic number.

266004213340247 is a deficient number, since it is larger than the sum of its proper divisors (1).

266004213340247 is an equidigital number, since it uses as much as digits as its factorization.

266004213340247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1161216, while the sum is 44.

The spelling of 266004213340247 in words is "two hundred sixty-six trillion, four billion, two hundred thirteen million, three hundred forty thousand, two hundred forty-seven".