12595489844 has 96 divisors (see below), whose sum is σ = 26976552960. Its totient is φ = 5029516800.

The previous prime is 12595489817. The next prime is 12595489853. The reversal of 12595489844 is 44898459521.

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, 16638314 + ... + 16639070.

It is an arithmetic number, because the mean of its divisors is an integer number (281005760).

Almost surely, 2^12595489844 is an apocalyptic number.

12595489844 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12595489844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13488276480).

12595489844 is an abundant number, since it is smaller than the sum of its proper divisors (14381063116).

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

12595489844 is a wasteful number, since it uses less digits than its factorization.

12595489844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1489 (or 1487 counting only the distinct ones).

The product of its digits is 16588800, while the sum is 59.

The spelling of 12595489844 in words is "twelve billion, five hundred ninety-five million, four hundred eighty-nine thousand, eight hundred forty-four".