12585440936 has 8 divisors (see below), whose sum is σ = 23597701770. Its totient is φ = 6292720464.

The previous prime is 12585440921. The next prime is 12585440947. The reversal of 12585440936 is 63904458521.

12585440936 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 10303468036 + 2281972900 = 101506^2 + 47770^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 786590051 + ... + 786590066.

Almost surely, 2^12585440936 is an apocalyptic number.

It is an amenable number.

12585440936 is a deficient number, since it is larger than the sum of its proper divisors (11012260834).

12585440936 is a wasteful number, since it uses less digits than its factorization.

12585440936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1573180123 (or 1573180119 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 47.

The spelling of 12585440936 in words is "twelve billion, five hundred eighty-five million, four hundred forty thousand, nine hundred thirty-six".