266662400000 has 312 divisors, whose sum is σ = 677249965728. Its totient is φ = 104960000000.

The previous prime is 266662399963. The next prime is 266662400003. The reversal of 266662400000 is 4266662.

It is a super-2 number, since 2×266662400000² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 266662400000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266662400003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1062399875 + ... + 1062400125.

Almost surely, 2^266662400000 is an apocalyptic number.

266662400000 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 266662400000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (338624982864).

266662400000 is an abundant number, since it is smaller than the sum of its proper divisors (410587565728).

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

266662400000 is an frugal number, since it uses more digits than its factorization.

266662400000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383 (or 341 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

Adding to 266662400000 its reverse (4266662), we get a palindrome (266666666662).

The spelling of 266662400000 in words is "two hundred sixty-six billion, six hundred sixty-two million, four hundred thousand".