266623616005260 has 24 divisors (see below), whose sum is σ = 746546124814896. Its totient is φ = 71099630934720.

The previous prime is 266623616005183. The next prime is 266623616005277. The reversal of 266623616005260 is 62500616326662.

It is a happy number.

It is a super-2 number, since 2×266623616005260² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2221863466651 + ... + 2221863466770.

It is an arithmetic number, because the mean of its divisors is an integer number (31106088533954).

Almost surely, 2^{266623616005260} is an apocalyptic number.

266623616005260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266623616005260 is an abundant number, since it is smaller than the sum of its proper divisors (479922508809636).

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

266623616005260 is a wasteful number, since it uses less digits than its factorization.

266623616005260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4443726933433 (or 4443726933431 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 51.

The spelling of 266623616005260 in words is "two hundred sixty-six trillion, six hundred twenty-three billion, six hundred sixteen million, five thousand, two hundred sixty".