266819464704 has 160 divisors (see below), whose sum is σ = 766774673280. Its totient is φ = 81961869312.

The previous prime is 266819464687. The next prime is 266819464781. The reversal of 266819464704 is 407464918662.

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, 12349399 + ... + 12370985.

It is an arithmetic number, because the mean of its divisors is an integer number (4792341708).

Almost surely, 2^266819464704 is an apocalyptic number.

266819464704 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 266819464704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (383387336640).

266819464704 is an abundant number, since it is smaller than the sum of its proper divisors (499955208576).

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

266819464704 is a wasteful number, since it uses less digits than its factorization.

266819464704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22240 (or 22224 counting only the distinct ones).

The product of its (nonzero) digits is 13934592, while the sum is 57.

The spelling of 266819464704 in words is "two hundred sixty-six billion, eight hundred nineteen million, four hundred sixty-four thousand, seven hundred four".