518104055809 has 8 divisors (see below), whose sum is σ = 526587155360. Its totient is φ = 509658410016.

The previous prime is 518104055761. The next prime is 518104055851. The reversal of 518104055809 is 908550401815.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 518104055809 - 2⁹ = 518104055297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (518104055869) 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, 9335547 + ... + 9390880.

It is an arithmetic number, because the mean of its divisors is an integer number (65823394420).

Almost surely, 2^518104055809 is an apocalyptic number.

It is an amenable number.

518104055809 is a deficient number, since it is larger than the sum of its proper divisors (8483099551).

518104055809 is a wasteful number, since it uses less digits than its factorization.

518104055809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18726879.

The product of its (nonzero) digits is 288000, while the sum is 46.

The spelling of 518104055809 in words is "five hundred eighteen billion, one hundred four million, fifty-five thousand, eight hundred nine".