18046773504 has 432 divisors, whose sum is σ = 57854684160. Its totient is φ = 5385093120.

The previous prime is 18046773499. The next prime is 18046773527. The reversal of 18046773504 is 40537764081.

18046773504 is a `hidden beast` number, since 1 + 80 + 4 + 67 + 7 + 3 + 504 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 18046773504.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 108064429 + ... + 108064595.

It is an arithmetic number, because the mean of its divisors is an integer number (133922880).

Almost surely, 2^18046773504 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 18046773504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28927342080).

18046773504 is an abundant number, since it is smaller than the sum of its proper divisors (39807910656).

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

18046773504 is a wasteful number, since it uses less digits than its factorization.

18046773504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326 (or 309 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 45.

The spelling of 18046773504 in words is "eighteen billion, forty-six million, seven hundred seventy-three thousand, five hundred four".