12443120520 has 128 divisors (see below), whose sum is σ = 41002675200. Its totient is φ = 3006837504.

The previous prime is 12443120519. The next prime is 12443120537. The reversal of 12443120520 is 2502134421.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 66202 + ... + 171081.

It is an arithmetic number, because the mean of its divisors is an integer number (320333400).

Almost surely, 2^12443120520 is an apocalyptic number.

12443120520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12443120520 is an abundant number, since it is smaller than the sum of its proper divisors (28559554680).

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

12443120520 is a wasteful number, since it uses less digits than its factorization.

12443120520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237339 (or 237335 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 12443120520 its reverse (2502134421), we get a palindrome (14945254941).

The spelling of 12443120520 in words is "twelve billion, four hundred forty-three million, one hundred twenty thousand, five hundred twenty".