5518811518 has 32 divisors (see below), whose sum is σ = 9343024128. Its totient is φ = 2422180800.

The previous prime is 5518811513. The next prime is 5518811539. The reversal of 5518811518 is 8151188155.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5518811513) 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, 302821 + ... + 320527.

It is an arithmetic number, because the mean of its divisors is an integer number (291969504).

Almost surely, 2^5518811518 is an apocalyptic number.

5518811518 is a deficient number, since it is larger than the sum of its proper divisors (3824212610).

5518811518 is a wasteful number, since it uses less digits than its factorization.

5518811518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18208.

The product of its digits is 64000, while the sum is 43.

The square root of 5518811518 is about 74288.7038384706. The cubic root of 5518811518 is about 1767.1843385693.

The spelling of 5518811518 in words is "five billion, five hundred eighteen million, eight hundred eleven thousand, five hundred eighteen".