12399178198 has 8 divisors (see below), whose sum is σ = 20289564360. Its totient is φ = 5635990080.

The previous prime is 12399178193. The next prime is 12399178199. The reversal of 12399178198 is 89187199321.

12399178198 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12399178193) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 281799483 + ... + 281799526.

It is an arithmetic number, because the mean of its divisors is an integer number (2536195545).

Almost surely, 2^12399178198 is an apocalyptic number.

12399178198 is a deficient number, since it is larger than the sum of its proper divisors (7890386162).

12399178198 is a wasteful number, since it uses less digits than its factorization.

12399178198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563599022.

The product of its digits is 1959552, while the sum is 58.

The spelling of 12399178198 in words is "twelve billion, three hundred ninety-nine million, one hundred seventy-eight thousand, one hundred ninety-eight".