266799864000 has 224 divisors, whose sum is σ = 901464385536. Its totient is φ = 69491788800.

The previous prime is 266799863983. The next prime is 266799864013. The reversal of 266799864000 is 468997662.

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 31 ways as a sum of consecutive naturals, for example, 902737 + ... + 1161263.

Almost surely, 2^266799864000 is an apocalyptic number.

266799864000 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 266799864000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (450732192768).

266799864000 is an abundant number, since it is smaller than the sum of its proper divisors (634664521536).

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

266799864000 is a wasteful number, since it uses less digits than its factorization.

266799864000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258600 (or 258580 counting only the distinct ones).

The product of its (nonzero) digits is 7838208, while the sum is 57.

The spelling of 266799864000 in words is "two hundred sixty-six billion, seven hundred ninety-nine million, eight hundred sixty-four thousand".