518044404523 has 8 divisors (see below), whose sum is σ = 518969901296. Its totient is φ = 517119120000.

The previous prime is 518044404491. The next prime is 518044404529. The reversal of 518044404523 is 325404440815.

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 518044404523 - 2⁵ = 518044404491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (518044404529) 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, 5314423 + ... + 5411023.

It is an arithmetic number, because the mean of its divisors is an integer number (64871237662).

Almost surely, 2^518044404523 is an apocalyptic number.

518044404523 is a deficient number, since it is larger than the sum of its proper divisors (925496773).

518044404523 is an equidigital number, since it uses as much as digits as its factorization.

518044404523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106125.

The product of its (nonzero) digits is 307200, while the sum is 40.

The spelling of 518044404523 in words is "five hundred eighteen billion, forty-four million, four hundred four thousand, five hundred twenty-three".