266696382871 has 2 divisors, whose sum is σ = 266696382872. Its totient is φ = 266696382870.

The previous prime is 266696382859. The next prime is 266696382917. The reversal of 266696382871 is 178283696662.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 266696382871 - 2²³ = 266687994263 is a prime.

It is a super-2 number, since 2×266696382871² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (266696389871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133348191435 + 133348191436.

It is an arithmetic number, because the mean of its divisors is an integer number (133348191436).

Almost surely, 2^266696382871 is an apocalyptic number.

266696382871 is a deficient number, since it is larger than the sum of its proper divisors (1).

266696382871 is an equidigital number, since it uses as much as digits as its factorization.

266696382871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62705664, while the sum is 64.

The spelling of 266696382871 in words is "two hundred sixty-six billion, six hundred ninety-six million, three hundred eighty-two thousand, eight hundred seventy-one".