13144152440 has 32 divisors (see below), whose sum is σ = 29592276480. Its totient is φ = 5254472832.

The previous prime is 13144152433. The next prime is 13144152457. The reversal of 13144152440 is 4425144131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32279 + ... + 165318.

It is an arithmetic number, because the mean of its divisors is an integer number (924758640).

Almost surely, 2^13144152440 is an apocalyptic number.

13144152440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13144152440 is an abundant number, since it is smaller than the sum of its proper divisors (16448124040).

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

13144152440 is a wasteful number, since it uses less digits than its factorization.

13144152440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199271 (or 199267 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

Adding to 13144152440 its reverse (4425144131), we get a palindrome (17569296571).

The spelling of 13144152440 in words is "thirteen billion, one hundred forty-four million, one hundred fifty-two thousand, four hundred forty".