266855902272 has 1120 divisors, whose sum is σ = 936831329280. Its totient is φ = 74530160640.

The previous prime is 266855902267. The next prime is 266855902273. The reversal of 266855902272 is 272209558662.

266855902272 is a `hidden beast` number, since 2 + 6 + 68 + 559 + 0 + 2 + 27 + 2 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (266855902273) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 2751091728 + ... + 2751091824.

It is an arithmetic number, because the mean of its divisors is an integer number (836456544).

Almost surely, 2^266855902272 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 266855902272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (468415664640).

266855902272 is an abundant number, since it is smaller than the sum of its proper divisors (669975427008).

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

266855902272 is a wasteful number, since it uses less digits than its factorization.

266855902272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241 (or 222 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 54.

The spelling of 266855902272 in words is "two hundred sixty-six billion, eight hundred fifty-five million, nine hundred two thousand, two hundred seventy-two".