18072059904 has 120 divisors (see below), whose sum is σ = 53546520720. Its totient is φ = 6023872512.

The previous prime is 18072059851. The next prime is 18072059921. The reversal of 18072059904 is 40995027081.

It is a self number, because there is not a number n which added to its sum of digits gives 18072059904.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 421942 + ... + 462794.

It is an arithmetic number, because the mean of its divisors is an integer number (446221006).

Almost surely, 2^18072059904 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 18072059904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26773260360).

18072059904 is an abundant number, since it is smaller than the sum of its proper divisors (35474460816).

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

18072059904 is an frugal number, since it uses more digits than its factorization.

18072059904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40890 (or 40858 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The spelling of 18072059904 in words is "eighteen billion, seventy-two million, fifty-nine thousand, nine hundred four".