266004213334663 has 16 divisors (see below), whose sum is σ = 273790504260000. Its totient is φ = 258249566742912.

The previous prime is 266004213334661. The next prime is 266004213334693. The reversal of 266004213334663 is 366433312400662.

It is a cyclic number.

It is not a de Polignac number, because 266004213334663 - 2¹ = 266004213334661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266004213334661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84118848 + ... + 87223786.

It is an arithmetic number, because the mean of its divisors is an integer number (17111906516250).

Almost surely, 2^{266004213334663} is an apocalyptic number.

266004213334663 is a deficient number, since it is larger than the sum of its proper divisors (7786290925337).

266004213334663 is a wasteful number, since it uses less digits than its factorization.

266004213334663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3110034.

The product of its (nonzero) digits is 6718464, while the sum is 49.

The spelling of 266004213334663 in words is "two hundred sixty-six trillion, four billion, two hundred thirteen million, three hundred thirty-four thousand, six hundred sixty-three".