266040466621207 has 2 divisors, whose sum is σ = 266040466621208. Its totient is φ = 266040466621206.

The previous prime is 266040466621129. The next prime is 266040466621217. The reversal of 266040466621207 is 702126664040662.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 266040466621207 - 2³⁹ = 265490710807319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (266040466621217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133020233310603 + 133020233310604.

It is an arithmetic number, because the mean of its divisors is an integer number (133020233310604).

Almost surely, 2^{266040466621207} is an apocalyptic number.

266040466621207 is a deficient number, since it is larger than the sum of its proper divisors (1).

266040466621207 is an equidigital number, since it uses as much as digits as its factorization.

266040466621207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6967296, while the sum is 52.

The spelling of 266040466621207 in words is "two hundred sixty-six trillion, forty billion, four hundred sixty-six million, six hundred twenty-one thousand, two hundred seven".