266275891200 has 432 divisors, whose sum is σ = 967637754720. Its totient is φ = 64547225600.

The previous prime is 266275891199. The next prime is 266275891261. The reversal of 266275891200 is 2198572662.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 266275891200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 18578437 + ... + 18592763.

It is an arithmetic number, because the mean of its divisors is an integer number (2239902210).

Almost surely, 2^266275891200 is an apocalyptic number.

266275891200 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 266275891200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (483818877360).

266275891200 is an abundant number, since it is smaller than the sum of its proper divisors (701361863520).

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

266275891200 is a wasteful number, since it uses less digits than its factorization.

266275891200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14384 (or 14348 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 48.

The spelling of 266275891200 in words is "two hundred sixty-six billion, two hundred seventy-five million, eight hundred ninety-one thousand, two hundred".