12424555520 has 264 divisors, whose sum is σ = 32851009296. Its totient is φ = 4506058752.

The previous prime is 12424555343. The next prime is 12424555523. The reversal of 12424555520 is 2555542421.

It is not an unprimeable number, because it can be changed into a prime (12424555523) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71818154 + ... + 71818326.

Almost surely, 2^12424555520 is an apocalyptic number.

12424555520 is a gapful number since it is divisible by the number (10) 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 12424555520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16425504648).

12424555520 is an abundant number, since it is smaller than the sum of its proper divisors (20426453776).

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

12424555520 is a wasteful number, since it uses less digits than its factorization.

12424555520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307 (or 276 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 35.

The spelling of 12424555520 in words is "twelve billion, four hundred twenty-four million, five hundred fifty-five thousand, five hundred twenty".