266600968704 has 960 divisors, whose sum is σ = 959360561280. Its totient is φ = 73741860864.

The previous prime is 266600968693. The next prime is 266600968717. The reversal of 266600968704 is 407869006662.

It is a super-2 number, since 2×266600968704² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

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 95 ways as a sum of consecutive naturals, for example, 2359300552 + ... + 2359300664.

It is an arithmetic number, because the mean of its divisors is an integer number (999333918).

Almost surely, 2^266600968704 is an apocalyptic number.

266600968704 is a gapful number since it is divisible by the number (24) 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 266600968704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (479680280640).

266600968704 is an abundant number, since it is smaller than the sum of its proper divisors (692759592576).

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

266600968704 is an frugal number, since it uses more digits than its factorization.

266600968704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209 (or 168 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 54.

The spelling of 266600968704 in words is "two hundred sixty-six billion, six hundred million, nine hundred sixty-eight thousand, seven hundred four".