12549116191186 has 4 divisors (see below), whose sum is σ = 18823674286782. Its totient is φ = 6274558095592.

The previous prime is 12549116191147. The next prime is 12549116191187. The reversal of 12549116191186 is 68119161194521.

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

It can be written as a sum of positive squares in only one way, i.e., 12316372661961 + 232743529225 = 3509469^2 + 482435^2 .

It is not an unprimeable number, because it can be changed into a prime (12549116191187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3137279047795 + ... + 3137279047798.

Almost surely, 2^{12549116191186} is an apocalyptic number.

12549116191186 is a deficient number, since it is larger than the sum of its proper divisors (6274558095596).

12549116191186 is an equidigital number, since it uses as much as digits as its factorization.

12549116191186 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6274558095595.

The product of its digits is 933120, while the sum is 55.

The spelling of 12549116191186 in words is "twelve trillion, five hundred forty-nine billion, one hundred sixteen million, one hundred ninety-one thousand, one hundred eighty-six".