13003443012 has 144 divisors (see below), whose sum is σ = 35735384832. Its totient is φ = 3669261120.

The previous prime is 13003442983. The next prime is 13003443031. The reversal of 13003443012 is 21034430031.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 13003443012.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20222763 + ... + 20223405.

Almost surely, 2^13003443012 is an apocalyptic number.

13003443012 is a gapful number since it is divisible by the number (12) 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 13003443012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17867692416).

13003443012 is an abundant number, since it is smaller than the sum of its proper divisors (22731941820).

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

13003443012 is a wasteful number, since it uses less digits than its factorization.

13003443012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1038 (or 1029 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 13003443012 its reverse (21034430031), we get a palindrome (34037873043).

The spelling of 13003443012 in words is "thirteen billion, three million, four hundred forty-three thousand, twelve".