18128242048 has 32 divisors (see below), whose sum is σ = 41274124560. Its totient is φ = 7769246208.

The previous prime is 18128242007. The next prime is 18128242049. The reversal of 18128242048 is 84024282181.

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 18128242048.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18128242049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10115311 + ... + 10117102.

Almost surely, 2^18128242048 is an apocalyptic number.

It is an amenable number.

18128242048 is an abundant number, since it is smaller than the sum of its proper divisors (23145882512).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18128242048 is an equidigital number, since it uses as much as digits as its factorization.

18128242048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20232434 (or 20232422 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 40.

The spelling of 18128242048 in words is "eighteen billion, one hundred twenty-eight million, two hundred forty-two thousand, forty-eight".