266648040811 has 2 divisors, whose sum is σ = 266648040812. Its totient is φ = 266648040810.

The previous prime is 266648040787. The next prime is 266648040853. The reversal of 266648040811 is 118040846662.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 266648040811 - 2⁵ = 266648040779 is a prime.

It is a super-2 number, since 2×266648040811² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (266642040811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133324020405 + 133324020406.

It is an arithmetic number, because the mean of its divisors is an integer number (133324020406).

Almost surely, 2^266648040811 is an apocalyptic number.

266648040811 is a deficient number, since it is larger than the sum of its proper divisors (1).

266648040811 is an equidigital number, since it uses as much as digits as its factorization.

266648040811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 442368, while the sum is 46.

The spelling of 266648040811 in words is "two hundred sixty-six billion, six hundred forty-eight million, forty thousand, eight hundred eleven".