12365587613 has 4 divisors (see below), whose sum is σ = 12764477568. Its totient is φ = 11966697660.

The previous prime is 12365587583. The next prime is 12365587693. The reversal of 12365587613 is 31678556321.

12365587613 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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12365587613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12365587693) 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, 199444931 + ... + 199444992.

It is an arithmetic number, because the mean of its divisors is an integer number (3191119392).

Almost surely, 2^12365587613 is an apocalyptic number.

It is an amenable number.

12365587613 is a deficient number, since it is larger than the sum of its proper divisors (398889955).

12365587613 is an equidigital number, since it uses as much as digits as its factorization.

12365587613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398889954.

The product of its digits is 907200, while the sum is 47.

The spelling of 12365587613 in words is "twelve billion, three hundred sixty-five million, five hundred eighty-seven thousand, six hundred thirteen".