12489409198 has 12 divisors (see below), whose sum is σ = 21792744792. Its totient is φ = 5352603900.

The previous prime is 12489409171. The next prime is 12489409271. The reversal of 12489409198 is 89190498421.

It is a happy number.

12489409198 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 5 ways as a sum of consecutive naturals, for example, 63721378 + ... + 63721573.

It is an arithmetic number, because the mean of its divisors is an integer number (1816062066).

Almost surely, 2^12489409198 is an apocalyptic number.

12489409198 is a deficient number, since it is larger than the sum of its proper divisors (9303335594).

12489409198 is a wasteful number, since it uses less digits than its factorization.

12489409198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127442967 (or 127442960 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 55.

The spelling of 12489409198 in words is "twelve billion, four hundred eighty-nine million, four hundred nine thousand, one hundred ninety-eight".