12708649347 has 4 divisors (see below), whose sum is σ = 16944865800. Its totient is φ = 8472432896.

The previous prime is 12708649313. The next prime is 12708649409. The reversal of 12708649347 is 74394680721.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12708649347 - 2¹¹ = 12708647299 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12708649347.

It is not an unprimeable number, because it can be changed into a prime (12708649307) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2118108222 + ... + 2118108227.

It is an arithmetic number, because the mean of its divisors is an integer number (4236216450).

Almost surely, 2^12708649347 is an apocalyptic number.

12708649347 is a deficient number, since it is larger than the sum of its proper divisors (4236216453).

12708649347 is an equidigital number, since it uses as much as digits as its factorization.

12708649347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4236216452.

The product of its (nonzero) digits is 2032128, while the sum is 51.

The spelling of 12708649347 in words is "twelve billion, seven hundred eight million, six hundred forty-nine thousand, three hundred forty-seven".