18082004544 has 280 divisors, whose sum is σ = 54939606656. Its totient is φ = 5878656000.

The previous prime is 18082004503. The next prime is 18082004573. The reversal of 18082004544 is 44540028081.

18082004544 is a `hidden beast` number, since 180 + 8 + 20 + 0 + 454 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 18082004499 and 18082004508.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 66723129 + ... + 66723399.

Almost surely, 2^18082004544 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 18082004544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27469803328).

18082004544 is an abundant number, since it is smaller than the sum of its proper divisors (36857602112).

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

18082004544 is a wasteful number, since it uses less digits than its factorization.

18082004544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567 (or 548 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 36.

The spelling of 18082004544 in words is "eighteen billion, eighty-two million, four thousand, five hundred forty-four".