12626772666 has 16 divisors (see below), whose sum is σ = 26124357600. Its totient is φ = 4063788848.

The previous prime is 12626772569. The next prime is 12626772679. The reversal of 12626772666 is 66627762621.

It is a happy number.

12626772666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×12626772666³ (a number of 31 digits) contains 333 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36283656 + ... + 36284003.

It is an arithmetic number, because the mean of its divisors is an integer number (1632772350).

Almost surely, 2^12626772666 is an apocalyptic number.

12626772666 is an abundant number, since it is smaller than the sum of its proper divisors (13497584934).

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

12626772666 is a wasteful number, since it uses less digits than its factorization.

12626772666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72567693.

The product of its digits is 3048192, while the sum is 51.

The spelling of 12626772666 in words is "twelve billion, six hundred twenty-six million, seven hundred seventy-two thousand, six hundred sixty-six".