18543072220330 has 16 divisors (see below), whose sum is σ = 38145748567680. Its totient is φ = 6357624761232.

The previous prime is 18543072220313. The next prime is 18543072220373. The reversal of 18543072220330 is 3302227034581.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132450515790 + ... + 132450515929.

It is an arithmetic number, because the mean of its divisors is an integer number (2384109285480).

Almost surely, 2^{18543072220330} is an apocalyptic number.

18543072220330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18543072220330 is an abundant number, since it is smaller than the sum of its proper divisors (19602676347350).

18543072220330 is a wasteful number, since it uses less digits than its factorization.

18543072220330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264901031733.

The product of its (nonzero) digits is 241920, while the sum is 40.

The spelling of 18543072220330 in words is "eighteen trillion, five hundred forty-three billion, seventy-two million, two hundred twenty thousand, three hundred thirty".