266449079865 has 16 divisors (see below), whose sum is σ = 426453386688. Its totient is φ = 142061222976.

The previous prime is 266449079863. The next prime is 266449079881. The reversal of 266449079865 is 568970944662.

266449079865 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 266449079865 - 2¹ = 266449079863 is a prime.

It is a super-2 number, since 2×266449079865² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 266449079796 and 266449079805.

It is not an unprimeable number, because it can be changed into a prime (266449079861) 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 in 15 ways as a sum of consecutive naturals, for example, 2760534 + ... + 2855423.

It is an arithmetic number, because the mean of its divisors is an integer number (26653336668).

Almost surely, 2^266449079865 is an apocalyptic number.

It is an amenable number.

266449079865 is a deficient number, since it is larger than the sum of its proper divisors (160004306823).

266449079865 is a wasteful number, since it uses less digits than its factorization.

266449079865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5619128.

The product of its (nonzero) digits is 156764160, while the sum is 66.

The spelling of 266449079865 in words is "two hundred sixty-six billion, four hundred forty-nine million, seventy-nine thousand, eight hundred sixty-five".