266848295868 has 144 divisors (see below), whose sum is σ = 847599427584. Its totient is φ = 68765397120.

The previous prime is 266848295863. The next prime is 266848295881. The reversal of 266848295868 is 868592848662.

266848295868 is a `hidden beast` number, since 2 + 6 + 68 + 482 + 9 + 5 + 86 + 8 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 266848295796 and 266848295805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266848295863) 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, 26955 + ... + 731042.

It is an arithmetic number, because the mean of its divisors is an integer number (5886107136).

Almost surely, 2^266848295868 is an apocalyptic number.

266848295868 is a gapful number since it is divisible by the number (28) 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 266848295868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (423799713792).

266848295868 is an abundant number, since it is smaller than the sum of its proper divisors (580751131716).

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

266848295868 is a wasteful number, since it uses less digits than its factorization.

266848295868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 758152 (or 758147 counting only the distinct ones).

The product of its digits is 637009920, while the sum is 72.

The spelling of 266848295868 in words is "two hundred sixty-six billion, eight hundred forty-eight million, two hundred ninety-five thousand, eight hundred sixty-eight".