12185975318587 has 4 divisors (see below), whose sum is σ = 13926828935536. Its totient is φ = 10445121701640.

The previous prime is 12185975318563. The next prime is 12185975318603. The reversal of 12185975318587 is 78581357958121.

12185975318587 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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12185975318587 is a prime.

It is a super-2 number, since 2×12185975318587² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12185975118587) 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, 870426808464 + ... + 870426808477.

It is an arithmetic number, because the mean of its divisors is an integer number (3481707233884).

Almost surely, 2^{12185975318587} is an apocalyptic number.

12185975318587 is a deficient number, since it is larger than the sum of its proper divisors (1740853616949).

12185975318587 is an equidigital number, since it uses as much as digits as its factorization.

12185975318587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1740853616948.

The product of its digits is 169344000, while the sum is 70.

The spelling of 12185975318587 in words is "twelve trillion, one hundred eighty-five billion, nine hundred seventy-five million, three hundred eighteen thousand, five hundred eighty-seven".