266988960000 has 1440 divisors, whose sum is σ = 1151936262400. Its totient is φ = 60466176000.

The previous prime is 266988959981. The next prime is 266988960001. The reversal of 266988960000 is 69889662.

266988960000 is a `hidden beast` number, since 26 + 6 + 9 + 8 + 8 + 9 + 600 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1440).

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 (266988960001) 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, 2449439946 + ... + 2449440054.

Almost surely, 2^266988960000 is an apocalyptic number.

266988960000 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 266988960000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (575968131200).

266988960000 is an abundant number, since it is smaller than the sum of its proper divisors (884947302400).

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

266988960000 is an frugal number, since it uses more digits than its factorization.

266988960000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173 (or 126 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 54.

The spelling of 266988960000 in words is "two hundred sixty-six billion, nine hundred eighty-eight million, nine hundred sixty thousand".