18047772324 has 144 divisors (see below), whose sum is σ = 49020747776. Its totient is φ = 5799924000.

The previous prime is 18047772313. The next prime is 18047772359. The reversal of 18047772324 is 42327774081.

18047772324 is a `hidden beast` number, since 1 + 80 + 477 + 72 + 32 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 18047772324.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9249549 + ... + 9251499.

Almost surely, 2^18047772324 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 18047772324, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24510373888).

18047772324 is an abundant number, since it is smaller than the sum of its proper divisors (30972975452).

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

18047772324 is a wasteful number, since it uses less digits than its factorization.

18047772324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2308 (or 2294 counting only the distinct ones).

The product of its (nonzero) digits is 526848, while the sum is 45.

The spelling of 18047772324 in words is "eighteen billion, forty-seven million, seven hundred seventy-two thousand, three hundred twenty-four".