266579504881 has 2 divisors, whose sum is σ = 266579504882. Its totient is φ = 266579504880.

The previous prime is 266579504869. The next prime is 266579504929. The reversal of 266579504881 is 188405975662.

266579504881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 238543351281 + 28036153600 = 488409^2 + 167440^2 .

It is a cyclic number.

It is not a de Polignac number, because 266579504881 - 2²⁵ = 266545950449 is a prime.

It is a super-2 number, since 2×266579504881² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (266579504981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133289752440 + 133289752441.

It is an arithmetic number, because the mean of its divisors is an integer number (133289752441).

Almost surely, 2^266579504881 is an apocalyptic number.

It is an amenable number.

266579504881 is a deficient number, since it is larger than the sum of its proper divisors (1).

266579504881 is an equidigital number, since it uses as much as digits as its factorization.

266579504881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29030400, while the sum is 61.

The spelling of 266579504881 in words is "two hundred sixty-six billion, five hundred seventy-nine million, five hundred four thousand, eight hundred eighty-one".