12443431620 has 144 divisors (see below), whose sum is σ = 36550471104. Its totient is φ = 3162297600.

The previous prime is 12443431613. The next prime is 12443431657. The reversal of 12443431620 is 2613434421.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3861610 + ... + 3864830.

It is an arithmetic number, because the mean of its divisors is an integer number (253822716).

Almost surely, 2^12443431620 is an apocalyptic number.

12443431620 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 12443431620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18275235552).

12443431620 is an abundant number, since it is smaller than the sum of its proper divisors (24107039484).

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

12443431620 is a wasteful number, since it uses less digits than its factorization.

12443431620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3362 (or 3329 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

The spelling of 12443431620 in words is "twelve billion, four hundred forty-three million, four hundred thirty-one thousand, six hundred twenty".