266640826082 has 8 divisors (see below), whose sum is σ = 404455185900. Its totient is φ = 131822430784.

The previous prime is 266640826069. The next prime is 266640826093. The reversal of 266640826082 is 280628046662.

It can be written as a sum of positive squares in 2 ways, for example, as 261357135361 + 5283690721 = 511231^2 + 72689^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 266640826082.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 748990907 + ... + 748991262.

Almost surely, 2^266640826082 is an apocalyptic number.

266640826082 is a deficient number, since it is larger than the sum of its proper divisors (137814359818).

266640826082 is a wasteful number, since it uses less digits than its factorization.

266640826082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1497982260.

The product of its (nonzero) digits is 2654208, while the sum is 50.

The spelling of 266640826082 in words is "two hundred sixty-six billion, six hundred forty million, eight hundred twenty-six thousand, eighty-two".