12886998445 has 4 divisors (see below), whose sum is σ = 15464398140. Its totient is φ = 10309598752.

The previous prime is 12886998433. The next prime is 12886998497. The reversal of 12886998445 is 54489968821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54489968821 = 76369 ⋅713509.

It can be written as a sum of positive squares in 2 ways, for example, as 5894861284 + 6992137161 = 76778^2 + 83619^2 .

It is a cyclic number.

It is not a de Polignac number, because 12886998445 - 2⁹ = 12886997933 is a prime.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1288699840 + ... + 1288699849.

It is an arithmetic number, because the mean of its divisors is an integer number (3866099535).

Almost surely, 2^12886998445 is an apocalyptic number.

It is an amenable number.

12886998445 is a deficient number, since it is larger than the sum of its proper divisors (2577399695).

12886998445 is an equidigital number, since it uses as much as digits as its factorization.

12886998445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2577399694.

The product of its digits is 39813120, while the sum is 64.

The spelling of 12886998445 in words is "twelve billion, eight hundred eighty-six million, nine hundred ninety-eight thousand, four hundred forty-five".