266080861128 has 32 divisors (see below), whose sum is σ = 665215387200. Its totient is φ = 88691855808.

The previous prime is 266080861097. The next prime is 266080861229. The reversal of 266080861128 is 821168080662.

It is a happy number.

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, 1787950 + ... + 1931042.

It is an arithmetic number, because the mean of its divisors is an integer number (20787980850).

Almost surely, 2^266080861128 is an apocalyptic number.

It is an amenable number.

266080861128 is an abundant number, since it is smaller than the sum of its proper divisors (399134526072).

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

266080861128 is a wasteful number, since it uses less digits than its factorization.

266080861128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220581 (or 220577 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 48.

The spelling of 266080861128 in words is "two hundred sixty-six billion, eighty million, eight hundred sixty-one thousand, one hundred twenty-eight".