266811600000 has 1536 divisors, whose sum is σ = 1084318099200. Its totient is φ = 57344000000.

The previous prime is 266811599993. The next prime is 266811600007. The reversal of 266811600000 is 6118662.

It is an interprime number because it is at equal distance from previous prime (266811599993) and next prime (266811600007).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (266811600007) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 6507599980 + ... + 6507600020.

Almost surely, 2^266811600000 is an apocalyptic number.

266811600000 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 266811600000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (542159049600).

266811600000 is an abundant number, since it is smaller than the sum of its proper divisors (817506499200).

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

266811600000 is a wasteful number, since it uses less digits than its factorization.

266811600000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140 (or 108 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

Adding to 266811600000 its reverse (6118662), we get a palindrome (266817718662).

The spelling of 266811600000 in words is "two hundred sixty-six billion, eight hundred eleven million, six hundred thousand".