266020872000 has 336 divisors, whose sum is σ = 951182361792. Its totient is φ = 65481062400.

The previous prime is 266020871999. The next prime is 266020872041. The reversal of 266020872000 is 278020662.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4023207 + ... + 4088793.

Almost surely, 2^266020872000 is an apocalyptic number.

266020872000 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 266020872000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (475591180896).

266020872000 is an abundant number, since it is smaller than the sum of its proper divisors (685161489792).

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

266020872000 is a wasteful number, since it uses less digits than its factorization.

266020872000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65643 (or 65610 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

Adding to 266020872000 its reverse (278020662), we get a palindrome (266298892662).

The spelling of 266020872000 in words is "two hundred sixty-six billion, twenty million, eight hundred seventy-two thousand".