266755325760 has 1344 divisors, whose sum is σ = 1204866109440. Its totient is φ = 55097763840.

The previous prime is 266755325731. The next prime is 266755325821. The reversal of 266755325760 is 67523557662.

266755325760 is a `hidden beast` number, since 2 + 6 + 6 + 7 + 553 + 25 + 7 + 60 = 666.

It is a tau number, because it is divible by the number of its divisors (1344).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 266755325697 and 266755325706.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1597337197 + ... + 1597337363.

It is an arithmetic number, because the mean of its divisors is an integer number (896477760).

Almost surely, 2^266755325760 is an apocalyptic number.

266755325760 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 266755325760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (602433054720).

266755325760 is an abundant number, since it is smaller than the sum of its proper divisors (938110783680).

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

266755325760 is an equidigital number, since it uses as much as digits as its factorization.

266755325760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239 (or 195 counting only the distinct ones).

The product of its (nonzero) digits is 15876000, while the sum is 54.

The spelling of 266755325760 in words is "two hundred sixty-six billion, seven hundred fifty-five million, three hundred twenty-five thousand, seven hundred sixty".