12541444520 has 64 divisors (see below), whose sum is σ = 31615574400. Its totient is φ = 4437262080.

The previous prime is 12541444481. The next prime is 12541444547. The reversal of 12541444520 is 2544414521.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 368900 + ... + 401459.

It is an arithmetic number, because the mean of its divisors is an integer number (493993350).

Almost surely, 2^12541444520 is an apocalyptic number.

12541444520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12541444520 is an abundant number, since it is smaller than the sum of its proper divisors (19074129880).

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

12541444520 is a wasteful number, since it uses less digits than its factorization.

12541444520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770418 (or 770414 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 32.

The spelling of 12541444520 in words is "twelve billion, five hundred forty-one million, four hundred forty-four thousand, five hundred twenty".