18325155072 has 288 divisors, whose sum is σ = 56865715200. Its totient is φ = 5131321344.

The previous prime is 18325155067. The next prime is 18325155077. The reversal of 18325155072 is 27055152381.

It is an interprime number because it is at equal distance from previous prime (18325155067) and next prime (18325155077).

It is a super-2 number, since 2×18325155072² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18325155072.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18325155077) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 102375079 + ... + 102375257.

It is an arithmetic number, because the mean of its divisors is an integer number (197450400).

Almost surely, 2^18325155072 is an apocalyptic number.

18325155072 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 18325155072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28432857600).

18325155072 is an abundant number, since it is smaller than the sum of its proper divisors (38540560128).

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

18325155072 is a wasteful number, since it uses less digits than its factorization.

18325155072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481 (or 467 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 39.

The spelling of 18325155072 in words is "eighteen billion, three hundred twenty-five million, one hundred fifty-five thousand, seventy-two".