18518335000018 has 48 divisors (see below), whose sum is σ = 32634819347328. Its totient is φ = 7857570084000.

The previous prime is 18518334999953. The next prime is 18518335000021. The reversal of 18518335000018 is 81000053381581.

It is a happy number.

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 23 ways as a sum of consecutive naturals, for example, 3859788 + ... + 7206568.

It is an arithmetic number, because the mean of its divisors is an integer number (679892069736).

Almost surely, 2^{18518335000018} is an apocalyptic number.

18518335000018 is a deficient number, since it is larger than the sum of its proper divisors (14116484347310).

18518335000018 is a wasteful number, since it uses less digits than its factorization.

18518335000018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3347359 (or 3347352 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 43.

Adding to 18518335000018 its reverse (81000053381581), we get a palindrome (99518388381599).

The spelling of 18518335000018 in words is "eighteen trillion, five hundred eighteen billion, three hundred thirty-five million, eighteen", and thus it is an aban number.