12564035605 has 24 divisors (see below), whose sum is σ = 16633435392. Its totient is φ = 9103644000.

The previous prime is 12564035587. The next prime is 12564035633. The reversal of 12564035605 is 50653046521.

It is not a de Polignac number, because 12564035605 - 2¹¹ = 12564033557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 125640 + ... + 202270.

It is an arithmetic number, because the mean of its divisors is an integer number (693059808).

Almost surely, 2^12564035605 is an apocalyptic number.

It is an amenable number.

12564035605 is a deficient number, since it is larger than the sum of its proper divisors (4069399787).

12564035605 is a wasteful number, since it uses less digits than its factorization.

12564035605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76929 (or 76918 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 37.

The spelling of 12564035605 in words is "twelve billion, five hundred sixty-four million, thirty-five thousand, six hundred five".