12849408009 has 12 divisors (see below), whose sum is σ = 18575276356. Its totient is φ = 8559339552.

The previous prime is 12849407983. The next prime is 12849408017. The reversal of 12849408009 is 90080494821.

12849408009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 9681969609 + 3167438400 = 98397^2 + 56280^2 .

It is not a de Polignac number, because 12849408009 - 2⁷ = 12849407881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12849408029) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 565954 + ... + 588219.

Almost surely, 2^12849408009 is an apocalyptic number.

It is an amenable number.

12849408009 is a deficient number, since it is larger than the sum of its proper divisors (5725868347).

12849408009 is a wasteful number, since it uses less digits than its factorization.

12849408009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1155416 (or 1155413 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The spelling of 12849408009 in words is "twelve billion, eight hundred forty-nine million, four hundred eight thousand, nine".