12535544448 has 320 divisors, whose sum is σ = 43169353920. Its totient is φ = 3536732160.

The previous prime is 12535544429. The next prime is 12535544521. The reversal of 12535544448 is 84444553521.

12535544448 is a `hidden beast` number, since 1 + 2 + 53 + 554 + 4 + 4 + 48 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 6022768 + ... + 6024848.

It is an arithmetic number, because the mean of its divisors is an integer number (134904231).

Almost surely, 2^12535544448 is an apocalyptic number.

12535544448 is a gapful number since it is divisible by the number (18) 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 12535544448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21584676960).

12535544448 is an abundant number, since it is smaller than the sum of its proper divisors (30633809472).

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

12535544448 is an equidigital number, since it uses as much as digits as its factorization.

12535544448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2197 (or 2176 counting only the distinct ones).

The product of its digits is 1536000, while the sum is 45.

The spelling of 12535544448 in words is "twelve billion, five hundred thirty-five million, five hundred forty-four thousand, four hundred forty-eight".