266680587168 has 336 divisors, whose sum is σ = 812095502400. Its totient is φ = 86124487680.

The previous prime is 266680587167. The next prime is 266680587181. The reversal of 266680587168 is 861785086662.

It is a super-2 number, since 2×266680587168² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (266680587167) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 97719628 + ... + 97722356.

It is an arithmetic number, because the mean of its divisors is an integer number (2416950900).

Almost surely, 2^266680587168 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 266680587168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (406047751200).

266680587168 is an abundant number, since it is smaller than the sum of its proper divisors (545414915232).

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

266680587168 is an equidigital number, since it uses as much as digits as its factorization.

266680587168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2887 (or 2864 counting only the distinct ones).

The product of its (nonzero) digits is 46448640, while the sum is 63.

The spelling of 266680587168 in words is "two hundred sixty-six billion, six hundred eighty million, five hundred eighty-seven thousand, one hundred sixty-eight".