13438128998 has 32 divisors (see below), whose sum is σ = 23144209920. Its totient is φ = 5732400960.

The previous prime is 13438128997. The next prime is 13438129013. The reversal of 13438128998 is 89982183431.

13438128998 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13438128997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3738290 + ... + 3741882.

It is an arithmetic number, because the mean of its divisors is an integer number (723256560).

Almost surely, 2^13438128998 is an apocalyptic number.

13438128998 is a deficient number, since it is larger than the sum of its proper divisors (9706080922).

13438128998 is a wasteful number, since it uses less digits than its factorization.

13438128998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4772.

The product of its digits is 2985984, while the sum is 56.

The spelling of 13438128998 in words is "thirteen billion, four hundred thirty-eight million, one hundred twenty-eight thousand, nine hundred ninety-eight".