266004213334664 has 128 divisors (see below), whose sum is σ = 626167196928000. Its totient is φ = 103294380777984.

The previous prime is 266004213334661. The next prime is 266004213334693. The reversal of 266004213334664 is 466433312400662.

266004213334664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 31 ways as a sum of consecutive naturals, for example, 218883407 + ... + 220095329.

It is an arithmetic number, because the mean of its divisors is an integer number (4891931226000).

Almost surely, 2^{266004213334664} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 266004213334664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (313083598464000).

266004213334664 is an abundant number, since it is smaller than the sum of its proper divisors (360162983593336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

266004213334664 is a wasteful number, since it uses less digits than its factorization.

266004213334664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1220947 (or 1220943 counting only the distinct ones).

The product of its (nonzero) digits is 8957952, while the sum is 50.

The spelling of 266004213334664 in words is "two hundred sixty-six trillion, four billion, two hundred thirteen million, three hundred thirty-four thousand, six hundred sixty-four".