12365807885 has 4 divisors (see below), whose sum is σ = 14838969468. Its totient is φ = 9892646304.

The previous prime is 12365807789. The next prime is 12365807887. The reversal of 12365807885 is 58870856321.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9540991684 + 2824816201 = 97678^2 + 53149^2 .

It is a cyclic number.

It is not a de Polignac number, because 12365807885 - 2²⁸ = 12097372429 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12365807887) 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, 1236580784 + ... + 1236580793.

It is an arithmetic number, because the mean of its divisors is an integer number (3709742367).

Almost surely, 2^12365807885 is an apocalyptic number.

It is an amenable number.

12365807885 is a deficient number, since it is larger than the sum of its proper divisors (2473161583).

12365807885 is an equidigital number, since it uses as much as digits as its factorization.

12365807885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2473161582.

The product of its (nonzero) digits is 3225600, while the sum is 53.

The spelling of 12365807885 in words is "twelve billion, three hundred sixty-five million, eight hundred seven thousand, eight hundred eighty-five".