12513257075820 has 48 divisors (see below), whose sum is σ = 35630969310720. Its totient is φ = 3280311458496.

The previous prime is 12513257075791. The next prime is 12513257075827. The reversal of 12513257075820 is 2857075231521.

12513257075820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 12513257075820.

It is not an unprimeable number, because it can be changed into a prime (12513257075827) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1767405652 + ... + 1767412731.

It is an arithmetic number, because the mean of its divisors is an integer number (742311860640).

Almost surely, 2^{12513257075820} is an apocalyptic number.

12513257075820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12513257075820 is an abundant number, since it is smaller than the sum of its proper divisors (23117712234900).

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

12513257075820 is a wasteful number, since it uses less digits than its factorization.

12513257075820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3534818454 (or 3534818452 counting only the distinct ones).

The product of its (nonzero) digits is 1176000, while the sum is 48.

The spelling of 12513257075820 in words is "twelve trillion, five hundred thirteen billion, two hundred fifty-seven million, seventy-five thousand, eight hundred twenty".