266318684480 has 112 divisors (see below), whose sum is σ = 638656462080. Its totient is φ = 105775331328.

The previous prime is 266318684449. The next prime is 266318684491. The reversal of 266318684480 is 84486813662.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85384361 + ... + 85387479.

It is an arithmetic number, because the mean of its divisors is an integer number (5702289840).

Almost surely, 2^266318684480 is an apocalyptic number.

266318684480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 266318684480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (319328231040).

266318684480 is an abundant number, since it is smaller than the sum of its proper divisors (372337777600).

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

266318684480 is a wasteful number, since it uses less digits than its factorization.

266318684480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4936 (or 4926 counting only the distinct ones).

The product of its (nonzero) digits is 10616832, while the sum is 56.

The spelling of 266318684480 in words is "two hundred sixty-six billion, three hundred eighteen million, six hundred eighty-four thousand, four hundred eighty".