12544411444518 has 8 divisors (see below), whose sum is σ = 25088822889048. Its totient is φ = 4181470481504.

The previous prime is 12544411444471. The next prime is 12544411444519. The reversal of 12544411444518 is 81544411444521.

It is a sphenic number, since it is the product of 3 distinct primes.

12544411444518 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12544411444519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1045367620371 + ... + 1045367620382.

It is an arithmetic number, because the mean of its divisors is an integer number (3136102861131).

Almost surely, 2^{12544411444518} is an apocalyptic number.

12544411444518 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12544411444518 is a wasteful number, since it uses less digits than its factorization.

12544411444518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2090735240758.

The product of its digits is 1638400, while the sum is 48.

The spelling of 12544411444518 in words is "twelve trillion, five hundred forty-four billion, four hundred eleven million, four hundred forty-four thousand, five hundred eighteen".