266421822912 has 336 divisors, whose sum is σ = 953897398272. Its totient is φ = 69331230720.

The previous prime is 266421822899. The next prime is 266421822917. The reversal of 266421822912 is 219228124662.

266421822912 is a `hidden beast` number, since 2 + 66 + 421 + 82 + 2 + 91 + 2 = 666.

266421822912 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (336).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266421822917) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2062173 + ... + 2187555.

It is an arithmetic number, because the mean of its divisors is an integer number (2838980352).

Almost surely, 2^266421822912 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 266421822912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (476948699136).

266421822912 is an abundant number, since it is smaller than the sum of its proper divisors (687475575360).

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

266421822912 is a wasteful number, since it uses less digits than its factorization.

266421822912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125456 (or 125443 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The spelling of 266421822912 in words is "two hundred sixty-six billion, four hundred twenty-one million, eight hundred twenty-two thousand, nine hundred twelve".