18272515009320 has 1024 divisors, whose sum is σ = 75415173120000. Its totient is φ = 3868999188480.

The previous prime is 18272515009313. The next prime is 18272515009379. The reversal of 18272515009320 is 2390051527281.

18272515009320 is a `hidden beast` number, since 1 + 8 + 2 + 7 + 2 + 51 + 500 + 93 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 2726017089 + ... + 2726023791.

It is an arithmetic number, because the mean of its divisors is an integer number (73647630000).

Almost surely, 2^{18272515009320} is an apocalyptic number.

18272515009320 is a gapful number since it is divisible by the number (10) 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 18272515009320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37707586560000).

18272515009320 is an abundant number, since it is smaller than the sum of its proper divisors (57142658110680).

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

18272515009320 is a wasteful number, since it uses less digits than its factorization.

18272515009320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7695 (or 7685 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 45.

The spelling of 18272515009320 in words is "eighteen trillion, two hundred seventy-two billion, five hundred fifteen million, nine thousand, three hundred twenty".