12585723648 has 72 divisors (see below), whose sum is σ = 34952792448. Its totient is φ = 4012833792.

The previous prime is 12585723617. The next prime is 12585723701. The reversal of 12585723648 is 84632758521.

It is a self number, because there is not a number n which added to its sum of digits gives 12585723648.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 338590 + ... + 373917.

Almost surely, 2^12585723648 is an apocalyptic number.

It is an amenable number.

12585723648 is an abundant number, since it is smaller than the sum of its proper divisors (22367068800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12585723648 is an equidigital number, since it uses as much as digits as its factorization.

12585723648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712549 (or 712535 counting only the distinct ones).

The product of its digits is 3225600, while the sum is 51.

The spelling of 12585723648 in words is "twelve billion, five hundred eighty-five million, seven hundred twenty-three thousand, six hundred forty-eight".