13121434044 has 36 divisors (see below), whose sum is σ = 33179852160. Its totient is φ = 4372257600.

The previous prime is 13121434043. The next prime is 13121434049. The reversal of 13121434044 is 44043412131.

13121434044 is a `hidden beast` number, since 1 + 312 + 1 + 4 + 340 + 4 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 13121433999 and 13121434017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13121434043) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40344 + ... + 166944.

It is an arithmetic number, because the mean of its divisors is an integer number (921662560).

Almost surely, 2^13121434044 is an apocalyptic number.

It is an amenable number.

13121434044 is an abundant number, since it is smaller than the sum of its proper divisors (20058418116).

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

13121434044 is a wasteful number, since it uses less digits than its factorization.

13121434044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129490 (or 129485 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 13121434044 its reverse (44043412131), we get a palindrome (57164846175).

The spelling of 13121434044 in words is "thirteen billion, one hundred twenty-one million, four hundred thirty-four thousand, forty-four".