266041046206666 has 8 divisors (see below), whose sum is σ = 404528166150084. Its totient is φ = 131198324156640.

The previous prime is 266041046206603. The next prime is 266041046206667. The reversal of 266041046206666 is 666602640140662.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 265767756688225 + 273289518441 = 16302385^2 + 522771^2 .

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

It is not an unprimeable number, because it can be changed into a prime (266041046206667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 911099473165 + ... + 911099473456.

Almost surely, 2^{266041046206666} is an apocalyptic number.

266041046206666 is a deficient number, since it is larger than the sum of its proper divisors (138487119943418).

266041046206666 is a wasteful number, since it uses less digits than its factorization.

266041046206666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1822198946696.

The product of its (nonzero) digits is 17915904, while the sum is 55.

The spelling of 266041046206666 in words is "two hundred sixty-six trillion, forty-one billion, forty-six million, two hundred six thousand, six hundred sixty-six".