12813012043618 has 8 divisors (see below), whose sum is σ = 19219543676460. Its totient is φ = 6406497484800.

The previous prime is 12813012043577. The next prime is 12813012043633. The reversal of 12813012043618 is 81634021031821.

It can be written as a sum of positive squares in 2 ways, for example, as 12806542576129 + 6469467489 = 3578623^2 + 80433^2 .

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

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, 2189983 + ... + 5515618.

Almost surely, 2^{12813012043618} is an apocalyptic number.

12813012043618 is a deficient number, since it is larger than the sum of its proper divisors (6406531632842).

12813012043618 is an equidigital number, since it uses as much as digits as its factorization.

12813012043618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8537012.

The product of its (nonzero) digits is 55296, while the sum is 40.

The spelling of 12813012043618 in words is "twelve trillion, eight hundred thirteen billion, twelve million, forty-three thousand, six hundred eighteen".