266495943168 has 1440 divisors, whose sum is σ = 1046693007360. Its totient is φ = 63661178880.

The previous prime is 266495943163. The next prime is 266495943193. The reversal of 266495943168 is 861349594662.

266495943168 is a `hidden beast` number, since 2 + 6 + 6 + 4 + 9 + 594 + 31 + 6 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (266495943163) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 3210794455 + ... + 3210794537.

It is an arithmetic number, because the mean of its divisors is an integer number (726870144).

Almost surely, 2^266495943168 is an apocalyptic number.

266495943168 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 266495943168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (523346503680).

266495943168 is an abundant number, since it is smaller than the sum of its proper divisors (780197064192).

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

266495943168 is a wasteful number, since it uses less digits than its factorization.

266495943168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190 (or 158 counting only the distinct ones).

The product of its digits is 67184640, while the sum is 63.

The spelling of 266495943168 in words is "two hundred sixty-six billion, four hundred ninety-five million, nine hundred forty-three thousand, one hundred sixty-eight".