13194138578 has 16 divisors (see below), whose sum is σ = 20284992000. Its totient is φ = 6432650400.

The previous prime is 13194138521. The next prime is 13194138589. The reversal of 13194138578 is 87583149131.

It is a happy number.

13194138578 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×13194138578³ (a number of 31 digits) contains 333 as substring.

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 7 ways as a sum of consecutive naturals, for example, 110423 + ... + 196421.

It is an arithmetic number, because the mean of its divisors is an integer number (1267812000).

Almost surely, 2^13194138578 is an apocalyptic number.

13194138578 is a deficient number, since it is larger than the sum of its proper divisors (7090853422).

13194138578 is a wasteful number, since it uses less digits than its factorization.

13194138578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87913.

The product of its digits is 725760, while the sum is 50.

The spelling of 13194138578 in words is "thirteen billion, one hundred ninety-four million, one hundred thirty-eight thousand, five hundred seventy-eight".