18155483508618 has 32 divisors (see below), whose sum is σ = 42718784728320. Its totient is φ = 5695837963200.

The previous prime is 18155483508611. The next prime is 18155483508619. The reversal of 18155483508618 is 81680538455181.

18155483508618 is a `hidden beast` number, since 1 + 8 + 1 + 5 + 5 + 4 + 8 + 3 + 5 + 0 + 8 + 618 = 666.

It is not an unprimeable number, because it can be changed into a prime (18155483508611) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 9888606658 + ... + 9888608493.

It is an arithmetic number, because the mean of its divisors is an integer number (1334962022760).

Almost surely, 2^{18155483508618} is an apocalyptic number.

18155483508618 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

18155483508618 is an abundant number, since it is smaller than the sum of its proper divisors (24563301219702).

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

18155483508618 is a wasteful number, since it uses less digits than its factorization.

18155483508618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19777215179 (or 19777215173 counting only the distinct ones).

The product of its (nonzero) digits is 36864000, while the sum is 63.

The spelling of 18155483508618 in words is "eighteen trillion, one hundred fifty-five billion, four hundred eighty-three million, five hundred eight thousand, six hundred eighteen".