13144512440 has 64 divisors (see below), whose sum is σ = 29759616000. Its totient is φ = 5225109120.

The previous prime is 13144512427. The next prime is 13144512481. The reversal of 13144512440 is 4421544131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6031271 + ... + 6033449.

It is an arithmetic number, because the mean of its divisors is an integer number (464994000).

Almost surely, 2^13144512440 is an apocalyptic number.

13144512440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13144512440 is an abundant number, since it is smaller than the sum of its proper divisors (16615103560).

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

13144512440 is a wasteful number, since it uses less digits than its factorization.

13144512440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3060 (or 3056 counting only the distinct ones).

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

The spelling of 13144512440 in words is "thirteen billion, one hundred forty-four million, five hundred twelve thousand, four hundred forty".