13140003440 has 20 divisors (see below), whose sum is σ = 30550508184. Its totient is φ = 5256001344.

The previous prime is 13140003407. The next prime is 13140003463. The reversal of 13140003440 is 4430004131.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 82124942 + ... + 82125101.

Almost surely, 2^13140003440 is an apocalyptic number.

13140003440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13140003440 is an abundant number, since it is smaller than the sum of its proper divisors (17410504744).

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

13140003440 is a wasteful number, since it uses less digits than its factorization.

13140003440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164250056 (or 164250050 counting only the distinct ones).

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

Adding to 13140003440 its reverse (4430004131), we get a palindrome (17570007571).

The spelling of 13140003440 in words is "thirteen billion, one hundred forty million, three thousand, four hundred forty".