12361540613 has 4 divisors (see below), whose sum is σ = 12380766048. Its totient is φ = 12342315180.

The previous prime is 12361540603. The next prime is 12361540621. The reversal of 12361540613 is 31604516321.

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-12361540613 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12361540613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12361540603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9611753 + ... + 9613038.

It is an arithmetic number, because the mean of its divisors is an integer number (3095191512).

Almost surely, 2^12361540613 is an apocalyptic number.

It is an amenable number.

12361540613 is a deficient number, since it is larger than the sum of its proper divisors (19225435).

12361540613 is an equidigital number, since it uses as much as digits as its factorization.

12361540613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19225434.

The product of its (nonzero) digits is 12960, while the sum is 32.

The spelling of 12361540613 in words is "twelve billion, three hundred sixty-one million, five hundred forty thousand, six hundred thirteen".