266820275171 has 2 divisors, whose sum is σ = 266820275172. Its totient is φ = 266820275170.

The previous prime is 266820275129. The next prime is 266820275173. The reversal of 266820275171 is 171572028662.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 266820275171 - 2²⁶ = 266753166307 is a prime.

Together with 266820275173, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (266820275173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133410137585 + 133410137586.

It is an arithmetic number, because the mean of its divisors is an integer number (133410137586).

Almost surely, 2^266820275171 is an apocalyptic number.

266820275171 is a deficient number, since it is larger than the sum of its proper divisors (1).

266820275171 is an equidigital number, since it uses as much as digits as its factorization.

266820275171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 564480, while the sum is 47.

The spelling of 266820275171 in words is "two hundred sixty-six billion, eight hundred twenty million, two hundred seventy-five thousand, one hundred seventy-one".