12842186405 has 4 divisors (see below), whose sum is σ = 15410623692. Its totient is φ = 10273749120.

The previous prime is 12842186389. The next prime is 12842186417. The reversal of 12842186405 is 50468124821.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6390723364 + 6451463041 = 79942^2 + 80321^2 .

It is not a de Polignac number, because 12842186405 - 2⁴ = 12842186389 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 1284218636 + ... + 1284218645.

It is an arithmetic number, because the mean of its divisors is an integer number (3852655923).

Almost surely, 2^12842186405 is an apocalyptic number.

It is an amenable number.

12842186405 is a deficient number, since it is larger than the sum of its proper divisors (2568437287).

12842186405 is an equidigital number, since it uses as much as digits as its factorization.

12842186405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2568437286.

The product of its (nonzero) digits is 122880, while the sum is 41.

The spelling of 12842186405 in words is "twelve billion, eight hundred forty-two million, one hundred eighty-six thousand, four hundred five".