5538448645018 has 4 divisors (see below), whose sum is σ = 8307672967530. Its totient is φ = 2769224322508.

The previous prime is 5538448644959. The next prime is 5538448645043. The reversal of 5538448645018 is 8105468448355.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2914965484929 + 2623483160089 = 1707327^2 + 1619717^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1384612161253 + ... + 1384612161256.

Almost surely, 2^{5538448645018} is an apocalyptic number.

5538448645018 is a deficient number, since it is larger than the sum of its proper divisors (2769224322512).

5538448645018 is a wasteful number, since it uses less digits than its factorization.

5538448645018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2769224322511.

The product of its (nonzero) digits is 73728000, while the sum is 61.

The spelling of 5538448645018 in words is "five trillion, five hundred thirty-eight billion, four hundred forty-eight million, six hundred forty-five thousand, eighteen".