12618057618 has 48 divisors (see below), whose sum is σ = 27524689920. Its totient is φ = 4177528992.

The previous prime is 12618057607. The next prime is 12618057619. The reversal of 12618057618 is 81675081621.

12618057618 is a `hidden beast` number, since 1 + 2 + 61 + 8 + 0 + 576 + 18 = 666.

It is not an unprimeable number, because it can be changed into a prime (12618057619) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3519855 + ... + 3523437.

It is an arithmetic number, because the mean of its divisors is an integer number (573431040).

Almost surely, 2^12618057618 is an apocalyptic number.

12618057618 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12618057618 is an abundant number, since it is smaller than the sum of its proper divisors (14906632302).

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

12618057618 is a wasteful number, since it uses less digits than its factorization.

12618057618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4863 (or 4860 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 45.

The spelling of 12618057618 in words is "twelve billion, six hundred eighteen million, fifty-seven thousand, six hundred eighteen".