13440203412 has 12 divisors (see below), whose sum is σ = 31360474656. Its totient is φ = 4480067800.

The previous prime is 13440203407. The next prime is 13440203423. The reversal of 13440203412 is 21430204431.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 560008464 + ... + 560008487.

It is an arithmetic number, because the mean of its divisors is an integer number (2613372888).

Almost surely, 2^13440203412 is an apocalyptic number.

13440203412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13440203412 is an abundant number, since it is smaller than the sum of its proper divisors (17920271244).

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

13440203412 is a wasteful number, since it uses less digits than its factorization.

13440203412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1120016958 (or 1120016956 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 13440203412 its reverse (21430204431), we get a palindrome (34870407843).

The spelling of 13440203412 in words is "thirteen billion, four hundred forty million, two hundred three thousand, four hundred twelve".