12861909134 has 32 divisors (see below), whose sum is σ = 20465153280. Its totient is φ = 6045544512.

The previous prime is 12861909121. The next prime is 12861909149. The reversal of 12861909134 is 43190916821.

12861909134 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5307047 + ... + 5309469.

It is an arithmetic number, because the mean of its divisors is an integer number (639536040).

Almost surely, 2^12861909134 is an apocalyptic number.

12861909134 is a deficient number, since it is larger than the sum of its proper divisors (7603244146).

12861909134 is a wasteful number, since it uses less digits than its factorization.

12861909134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3464.

The product of its (nonzero) digits is 93312, while the sum is 44.

The spelling of 12861909134 in words is "twelve billion, eight hundred sixty-one million, nine hundred nine thousand, one hundred thirty-four".