13140052440 has 32 divisors (see below), whose sum is σ = 39420157680. Its totient is φ = 3504013952.

The previous prime is 13140052439. The next prime is 13140052441. The reversal of 13140052440 is 4425004131.

13140052440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (13140052439) and next prime (13140052441).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 13140052440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13140052441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54750099 + ... + 54750338.

Almost surely, 2^13140052440 is an apocalyptic number.

13140052440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13140052440 is an abundant number, since it is smaller than the sum of its proper divisors (26280105240).

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

13140052440 is a wasteful number, since it uses less digits than its factorization.

13140052440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109500451 (or 109500447 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 13140052440 its reverse (4425004131), we get a palindrome (17565056571).

The spelling of 13140052440 in words is "thirteen billion, one hundred forty million, fifty-two thousand, four hundred forty".