12720748266 has 48 divisors (see below), whose sum is σ = 27814413120. Its totient is φ = 4201502400.

The previous prime is 12720748223. The next prime is 12720748331. The reversal of 12720748266 is 66284702721.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1105941 + ... + 1117383.

It is an arithmetic number, because the mean of its divisors is an integer number (579466940).

Almost surely, 2^12720748266 is an apocalyptic number.

12720748266 is an abundant number, since it is smaller than the sum of its proper divisors (15093664854).

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

12720748266 is a wasteful number, since it uses less digits than its factorization.

12720748266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12011 (or 12008 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The spelling of 12720748266 in words is "twelve billion, seven hundred twenty million, seven hundred forty-eight thousand, two hundred sixty-six".