13398816578 has 8 divisors (see below), whose sum is σ = 22969399872. Its totient is φ = 5742349956.

The previous prime is 13398816569. The next prime is 13398816593. The reversal of 13398816578 is 87561889331.

13398816578 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 478529150 + ... + 478529177.

It is an arithmetic number, because the mean of its divisors is an integer number (2871174984).

Almost surely, 2^13398816578 is an apocalyptic number.

13398816578 is a deficient number, since it is larger than the sum of its proper divisors (9570583294).

13398816578 is an equidigital number, since it uses as much as digits as its factorization.

13398816578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 957058336.

The product of its digits is 8709120, while the sum is 59.

The spelling of 13398816578 in words is "thirteen billion, three hundred ninety-eight million, eight hundred sixteen thousand, five hundred seventy-eight".