12426391198 has 12 divisors (see below), whose sum is σ = 20183695128. Its totient is φ = 5735257320.

The previous prime is 12426391181. The next prime is 12426391301. The reversal of 12426391198 is 89119362421.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18381898 + ... + 18382573.

It is an arithmetic number, because the mean of its divisors is an integer number (1681974594).

Almost surely, 2^12426391198 is an apocalyptic number.

12426391198 is a deficient number, since it is larger than the sum of its proper divisors (7757303930).

12426391198 is a wasteful number, since it uses less digits than its factorization.

12426391198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36764499 (or 36764486 counting only the distinct ones).

The product of its digits is 186624, while the sum is 46.

The spelling of 12426391198 in words is "twelve billion, four hundred twenty-six million, three hundred ninety-one thousand, one hundred ninety-eight".