12718881194 has 8 divisors (see below), whose sum is σ = 20200576068. Its totient is φ = 5985355840.

The previous prime is 12718881193. The next prime is 12718881199. The reversal of 12718881194 is 49118881721.

It can be written as a sum of positive squares in 2 ways, for example, as 12191030569 + 527850625 = 110413^2 + 22975^2 .

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

It is not an unprimeable number, because it can be changed into a prime (12718881193) by changing a digit.

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, 187042337 + ... + 187042404.

Almost surely, 2^12718881194 is an apocalyptic number.

12718881194 is a deficient number, since it is larger than the sum of its proper divisors (7481694874).

12718881194 is a wasteful number, since it uses less digits than its factorization.

12718881194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374084760.

The product of its digits is 258048, while the sum is 50.

The spelling of 12718881194 in words is "twelve billion, seven hundred eighteen million, eight hundred eighty-one thousand, one hundred ninety-four".