13240043012 has 96 divisors (see below), whose sum is σ = 27975628800. Its totient is φ = 5360458752.

The previous prime is 13240042997. The next prime is 13240043077. The reversal of 13240043012 is 21034004231.

It is a super-2 number, since 2×13240043012² (a number of 21 digits) contains 22 as substring.

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, 31598939 + ... + 31599357.

It is an arithmetic number, because the mean of its divisors is an integer number (291412800).

Almost surely, 2^13240043012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13240043012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13987814400).

13240043012 is an abundant number, since it is smaller than the sum of its proper divisors (14735585788).

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

13240043012 is a wasteful number, since it uses less digits than its factorization.

13240043012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 945 (or 943 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 13240043012 its reverse (21034004231), we get a palindrome (34274047243).

The spelling of 13240043012 in words is "thirteen billion, two hundred forty million, forty-three thousand, twelve".