266696382880 has 24 divisors (see below), whose sum is σ = 630070204932. Its totient is φ = 106678553088.

The previous prime is 266696382871. The next prime is 266696382917. The reversal of 266696382880 is 88283696662.

266696382880 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 240386245264 + 26310137616 = 490292^2 + 162204^2 .

It is a super-2 number, since 2×266696382880² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (64) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 833426037 + ... + 833426356.

Almost surely, 2^266696382880 is an apocalyptic number.

266696382880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266696382880 is an abundant number, since it is smaller than the sum of its proper divisors (363373822052).

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

266696382880 is a wasteful number, since it uses less digits than its factorization.

266696382880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1666852408 (or 1666852400 counting only the distinct ones).

The product of its (nonzero) digits is 71663616, while the sum is 64.

The spelling of 266696382880 in words is "two hundred sixty-six billion, six hundred ninety-six million, three hundred eighty-two thousand, eight hundred eighty".