12727449806 has 32 divisors (see below), whose sum is σ = 20461921920. Its totient is φ = 5916123136.

The previous prime is 12727449799. The next prime is 12727449821. The reversal of 12727449806 is 60894472721.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4788830 + ... + 4791486.

It is an arithmetic number, because the mean of its divisors is an integer number (639435060).

Almost surely, 2^12727449806 is an apocalyptic number.

12727449806 is a deficient number, since it is larger than the sum of its proper divisors (7734472114).

12727449806 is a wasteful number, since it uses less digits than its factorization.

12727449806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4348.

The product of its (nonzero) digits is 1354752, while the sum is 50.

Adding to 12727449806 its sum of digits (50), we get a square (12727449856 = 112816²).

The spelling of 12727449806 in words is "twelve billion, seven hundred twenty-seven million, four hundred forty-nine thousand, eight hundred six".