12458816618 has 8 divisors (see below), whose sum is σ = 18712529220. Its totient is φ = 6221306880.

The previous prime is 12458816497. The next prime is 12458816627. The reversal of 12458816618 is 81661885421.

12458816618 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 12236120689 + 222695929 = 110617^2 + 14923^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×12458816618² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4048793 + ... + 4051868.

Almost surely, 2^12458816618 is an apocalyptic number.

12458816618 is a deficient number, since it is larger than the sum of its proper divisors (6253712602).

12458816618 is an equidigital number, since it uses as much as digits as its factorization.

12458816618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8101432.

The product of its digits is 737280, while the sum is 50.

The spelling of 12458816618 in words is "twelve billion, four hundred fifty-eight million, eight hundred sixteen thousand, six hundred eighteen".