12585823606805 has 32 divisors (see below), whose sum is σ = 15791801644800. Its totient is φ = 9629445435456.

The previous prime is 12585823606753. The next prime is 12585823606841. The reversal of 12585823606805 is 50860632858521.

12585823606805 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-12585823606805 is a prime.

It is a super-2 number, since 2×12585823606805² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 588689606 + ... + 588710984.

It is an arithmetic number, because the mean of its divisors is an integer number (493493801400).

Almost surely, 2^{12585823606805} is an apocalyptic number.

It is an amenable number.

12585823606805 is a deficient number, since it is larger than the sum of its proper divisors (3205978037995).

12585823606805 is an frugal number, since it uses more digits than its factorization.

12585823606805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31130 (or 31084 counting only the distinct ones).

The product of its (nonzero) digits is 27648000, while the sum is 59.

The spelling of 12585823606805 in words is "twelve trillion, five hundred eighty-five billion, eight hundred twenty-three million, six hundred six thousand, eight hundred five".