13121404504 has 32 divisors (see below), whose sum is σ = 27647111520. Its totient is φ = 5792726016.

The previous prime is 13121404501. The next prime is 13121404529. The reversal of 13121404504 is 40540412131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13121404501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2740377 + ... + 2745160.

It is an arithmetic number, because the mean of its divisors is an integer number (863972235).

Almost surely, 2^13121404504 is an apocalyptic number.

It is an amenable number.

13121404504 is an abundant number, since it is smaller than the sum of its proper divisors (14525707016).

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

13121404504 is a wasteful number, since it uses less digits than its factorization.

13121404504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5485579 (or 5485575 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 13121404504 its reverse (40540412131), we get a palindrome (53661816635).

The spelling of 13121404504 in words is "thirteen billion, one hundred twenty-one million, four hundred four thousand, five hundred four".