266506688000 has 480 divisors, whose sum is σ = 818686440000. Its totient is φ = 85981593600.

The previous prime is 266506687999. The next prime is 266506688003. The reversal of 266506688000 is 886605662.

It is a happy number.

266506688000 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266506688003) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 53309501 + ... + 53314499.

It is an arithmetic number, because the mean of its divisors is an integer number (1705596750).

Almost surely, 2^266506688000 is an apocalyptic number.

266506688000 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 266506688000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (409343220000).

266506688000 is an abundant number, since it is smaller than the sum of its proper divisors (552179752000).

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

266506688000 is an equidigital number, since it uses as much as digits as its factorization.

266506688000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5063 (or 5030 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 47.

The spelling of 266506688000 in words is "two hundred sixty-six billion, five hundred six million, six hundred eighty-eight thousand".