18576448512 has 88 divisors (see below), whose sum is σ = 50851508496. Its totient is φ = 6024757248.

The previous prime is 18576448493. The next prime is 18576448519. The reversal of 18576448512 is 21584467581.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18576448519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31948 + ... + 195380.

Almost surely, 2^18576448512 is an apocalyptic number.

18576448512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18576448512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25425754248).

18576448512 is an abundant number, since it is smaller than the sum of its proper divisors (32275059984).

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

18576448512 is a wasteful number, since it uses less digits than its factorization.

18576448512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163493 (or 163475 counting only the distinct ones).

The product of its digits is 2150400, while the sum is 51.

The spelling of 18576448512 in words is "eighteen billion, five hundred seventy-six million, four hundred forty-eight thousand, five hundred twelve".