12516977198 has 32 divisors (see below), whose sum is σ = 21171290112. Its totient is φ = 5498647200.

The previous prime is 12516977119. The next prime is 12516977203. The reversal of 12516977198 is 89177961521.

It is a happy number.

12516977198 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, 515315 + ... + 539057.

It is an arithmetic number, because the mean of its divisors is an integer number (661602816).

Almost surely, 2^12516977198 is an apocalyptic number.

12516977198 is a deficient number, since it is larger than the sum of its proper divisors (8654312914).

12516977198 is a wasteful number, since it uses less digits than its factorization.

12516977198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24560.

The product of its digits is 1905120, while the sum is 56.

The spelling of 12516977198 in words is "twelve billion, five hundred sixteen million, nine hundred seventy-seven thousand, one hundred ninety-eight".