18006918471618 has 16 divisors (see below), whose sum is σ = 37579655941056. Its totient is φ = 5741336324240.

The previous prime is 18006918471571. The next prime is 18006918471629. The reversal of 18006918471618 is 81617481960081.

It is a super-2 number, since 2×18006918471618² (a number of 27 digits) contains 22 as substring.

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, 65242458093 + ... + 65242458368.

It is an arithmetic number, because the mean of its divisors is an integer number (2348728496316).

Almost surely, 2^{18006918471618} is an apocalyptic number.

18006918471618 is an abundant number, since it is smaller than the sum of its proper divisors (19572737469438).

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

18006918471618 is a wasteful number, since it uses less digits than its factorization.

18006918471618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130484916489.

The product of its (nonzero) digits is 4644864, while the sum is 60.

The spelling of 18006918471618 in words is "eighteen trillion, six billion, nine hundred eighteen million, four hundred seventy-one thousand, six hundred eighteen".