12704647609 has 8 divisors (see below), whose sum is σ = 13324322880. Its totient is φ = 12090580656.

The previous prime is 12704647607. The next prime is 12704647661. The reversal of 12704647609 is 90674640721.

12704647609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12704647609 - 2¹ = 12704647607 is a prime.

It is a super-2 number, since 2×12704647609² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12704647601) 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 7 ways as a sum of consecutive naturals, for example, 1397439 + ... + 1406500.

It is an arithmetic number, because the mean of its divisors is an integer number (1665540360).

Almost surely, 2^12704647609 is an apocalyptic number.

It is an amenable number.

12704647609 is a deficient number, since it is larger than the sum of its proper divisors (619675271).

12704647609 is a wasteful number, since it uses less digits than its factorization.

12704647609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2804159.

The product of its (nonzero) digits is 508032, while the sum is 46.

The spelling of 12704647609 in words is "twelve billion, seven hundred four million, six hundred forty-seven thousand, six hundred nine".