12706720556 has 24 divisors (see below), whose sum is σ = 22642751040. Its totient is φ = 6238252800.

The previous prime is 12706720529. The next prime is 12706720561. The reversal of 12706720556 is 65502760721.

12706720556 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-2 number, since 2×12706720556² (a number of 21 digits) contains 22 as substring.

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, 53885 + ... + 168276.

It is an arithmetic number, because the mean of its divisors is an integer number (943447960).

Almost surely, 2^12706720556 is an apocalyptic number.

It is an amenable number.

12706720556 is a deficient number, since it is larger than the sum of its proper divisors (9936030484).

12706720556 is a wasteful number, since it uses less digits than its factorization.

12706720556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222425 (or 222423 counting only the distinct ones).

The product of its (nonzero) digits is 176400, while the sum is 41.

The spelling of 12706720556 in words is "twelve billion, seven hundred six million, seven hundred twenty thousand, five hundred fifty-six".