198315246278 has 8 divisors (see below), whose sum is σ = 297979639272. Its totient is φ = 98988699856.

The previous prime is 198315246221. The next prime is 198315246289. The reversal of 198315246278 is 872642513891.

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, 84460175 + ... + 84462522.

It is an arithmetic number, because the mean of its divisors is an integer number (37247454909).

Almost surely, 2^198315246278 is an apocalyptic number.

198315246278 is a deficient number, since it is larger than the sum of its proper divisors (99664392994).

198315246278 is a wasteful number, since it uses less digits than its factorization.

198315246278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168923286.

The product of its digits is 5806080, while the sum is 56.

The spelling of 198315246278 in words is "one hundred ninety-eight billion, three hundred fifteen million, two hundred forty-six thousand, two hundred seventy-eight".