12530563420 has 24 divisors (see below), whose sum is σ = 26317298448. Its totient is φ = 5011632000.

The previous prime is 12530563417. The next prime is 12530563427. The reversal of 12530563420 is 2436503521.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12530563427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162195 + ... + 226645.

It is an arithmetic number, because the mean of its divisors is an integer number (1096554102).

Almost surely, 2^12530563420 is an apocalyptic number.

12530563420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12530563420 is an abundant number, since it is smaller than the sum of its proper divisors (13786735028).

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

12530563420 is a wasteful number, since it uses less digits than its factorization.

12530563420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74181 (or 74179 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 31.

The spelling of 12530563420 in words is "twelve billion, five hundred thirty million, five hundred sixty-three thousand, four hundred twenty".