266887680000 has 1040 divisors, whose sum is σ = 982605465600. Its totient is φ = 64143360000.

The previous prime is 266887679983. The next prime is 266887680043. The reversal of 266887680000 is 86788662.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 4523519971 + ... + 4523520029.

Almost surely, 2^266887680000 is an apocalyptic number.

266887680000 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 266887680000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (491302732800).

266887680000 is an abundant number, since it is smaller than the sum of its proper divisors (715717785600).

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

266887680000 is an equidigital number, since it uses as much as digits as its factorization.

266887680000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156 (or 119 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 51.

The spelling of 266887680000 in words is "two hundred sixty-six billion, eight hundred eighty-seven million, six hundred eighty thousand".