13004440520 has 32 divisors (see below), whose sum is σ = 29376587520. Its totient is φ = 5181048000.

The previous prime is 13004440517. The next prime is 13004440543. The reversal of 13004440520 is 2504440031.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 637592 + ... + 657671.

It is an arithmetic number, because the mean of its divisors is an integer number (918018360).

Almost surely, 2^13004440520 is an apocalyptic number.

13004440520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13004440520 is an abundant number, since it is smaller than the sum of its proper divisors (16372147000).

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

13004440520 is a wasteful number, since it uses less digits than its factorization.

13004440520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1295525 (or 1295521 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

Adding to 13004440520 its reverse (2504440031), we get a palindrome (15508880551).

The spelling of 13004440520 in words is "thirteen billion, four million, four hundred forty thousand, five hundred twenty".