18676912128 has 156 divisors (see below), whose sum is σ = 57931338960. Its totient is φ = 5336088576.

The previous prime is 18676912043. The next prime is 18676912151. The reversal of 18676912128 is 82121967681.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 586603 + ... + 617621.

Almost surely, 2^18676912128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18676912128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28965669480).

18676912128 is an abundant number, since it is smaller than the sum of its proper divisors (39254426832).

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

18676912128 is an equidigital number, since it uses as much as digits as its factorization.

18676912128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31060 (or 31031 counting only the distinct ones).

The product of its digits is 580608, while the sum is 51.

The spelling of 18676912128 in words is "eighteen billion, six hundred seventy-six million, nine hundred twelve thousand, one hundred twenty-eight".