266332775800 has 192 divisors, whose sum is σ = 766341576000. Its totient is φ = 83823206400.

The previous prime is 266332775791. The next prime is 266332775803. The reversal of 266332775800 is 8577233662.

266332775800 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266332775803) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 3253776 + ... + 3334624.

It is an arithmetic number, because the mean of its divisors is an integer number (3991362375).

Almost surely, 2^266332775800 is an apocalyptic number.

266332775800 is a gapful number since it is divisible by the number (20) 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 266332775800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (383170788000).

266332775800 is an abundant number, since it is smaller than the sum of its proper divisors (500008800200).

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

266332775800 is a wasteful number, since it uses less digits than its factorization.

266332775800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81066 (or 81057 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 49.

The spelling of 266332775800 in words is "two hundred sixty-six billion, three hundred thirty-two million, seven hundred seventy-five thousand, eight hundred".