266040066671 has 2 divisors, whose sum is σ = 266040066672. Its totient is φ = 266040066670.

The previous prime is 266040066631. The next prime is 266040066727. The reversal of 266040066671 is 176660040662.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 266040066671 - 2¹⁰ = 266040065647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (266040066631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133020033335 + 133020033336.

It is an arithmetic number, because the mean of its divisors is an integer number (133020033336).

Almost surely, 2^266040066671 is an apocalyptic number.

266040066671 is a deficient number, since it is larger than the sum of its proper divisors (1).

266040066671 is an equidigital number, since it uses as much as digits as its factorization.

266040066671 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 435456, while the sum is 44.

The spelling of 266040066671 in words is "two hundred sixty-six billion, forty million, sixty-six thousand, six hundred seventy-one".