12644000198 has 8 divisors (see below), whose sum is σ = 18967686408. Its totient is φ = 6321438064.

The previous prime is 12644000177. The next prime is 12644000263. The reversal of 12644000198 is 89100044621.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 252311 + ... + 298242.

It is an arithmetic number, because the mean of its divisors is an integer number (2370960801).

Almost surely, 2^12644000198 is an apocalyptic number.

12644000198 is a deficient number, since it is larger than the sum of its proper divisors (6323686210).

12644000198 is a wasteful number, since it uses less digits than its factorization.

12644000198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562038.

The product of its (nonzero) digits is 13824, while the sum is 35.

The spelling of 12644000198 in words is "twelve billion, six hundred forty-four million, one hundred ninety-eight", and thus it is an aban number.