18559708448 has 18 divisors (see below), whose sum is σ = 36540943299. Its totient is φ = 9279468896.

The previous prime is 18559708423. The next prime is 18559708457. The reversal of 18559708448 is 84480795581.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 9279854224 + 9279854224 = 96332^2 + 96332^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=96332.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 758615 + ... + 782697.

Almost surely, 2^18559708448 is an apocalyptic number.

It is an amenable number.

18559708448 is a deficient number, since it is larger than the sum of its proper divisors (17981234851).

18559708448 is an frugal number, since it uses more digits than its factorization.

18559708448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48176 (or 24085 counting only the distinct ones).

The product of its (nonzero) digits is 12902400, while the sum is 59.

The spelling of 18559708448 in words is "eighteen billion, five hundred fifty-nine million, seven hundred eight thousand, four hundred forty-eight".