12389345617 has 4 divisors (see below), whose sum is σ = 13515649776. Its totient is φ = 11263041460.

The previous prime is 12389345611. The next prime is 12389345621. The reversal of 12389345617 is 71654398321.

12389345617 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 71654398321 = 11 ⋅6514036211.

It is not a de Polignac number, because 12389345617 - 2³ = 12389345609 is a prime.

It is a super-2 number, since 2×12389345617² (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 (12389345611) 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 3 ways as a sum of consecutive naturals, for example, 563152063 + ... + 563152084.

It is an arithmetic number, because the mean of its divisors is an integer number (3378912444).

Almost surely, 2^12389345617 is an apocalyptic number.

It is an amenable number.

12389345617 is a deficient number, since it is larger than the sum of its proper divisors (1126304159).

12389345617 is a wasteful number, since it uses less digits than its factorization.

12389345617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1126304158.

The product of its digits is 1088640, while the sum is 49.

The spelling of 12389345617 in words is "twelve billion, three hundred eighty-nine million, three hundred forty-five thousand, six hundred seventeen".