18024636672 has 432 divisors, whose sum is σ = 65291083200. Its totient is φ = 4877107200.

The previous prime is 18024636647. The next prime is 18024636673. The reversal of 18024636672 is 27663642081.

18024636672 is a `hidden beast` number, since 1 + 8 + 0 + 2 + 4 + 636 + 6 + 7 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (432).

It is not an unprimeable number, because it can be changed into a prime (18024636673) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6433672 + ... + 6436472.

Almost surely, 2^18024636672 is an apocalyptic number.

18024636672 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 18024636672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32645541600).

18024636672 is an abundant number, since it is smaller than the sum of its proper divisors (47266446528).

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

18024636672 is a wasteful number, since it uses less digits than its factorization.

18024636672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2859 (or 2832 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The spelling of 18024636672 in words is "eighteen billion, twenty-four million, six hundred thirty-six thousand, six hundred seventy-two".