198686868704 has 24 divisors (see below), whose sum is σ = 411752393640. Its totient is φ = 94114832256.

The previous prime is 198686868689. The next prime is 198686868827. The reversal of 198686868704 is 407868686891.

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, 163393199 + ... + 163394414.

It is an arithmetic number, because the mean of its divisors is an integer number (17156349735).

Almost surely, 2^198686868704 is an apocalyptic number.

It is an amenable number.

198686868704 is an abundant number, since it is smaller than the sum of its proper divisors (213065524936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

198686868704 is a wasteful number, since it uses less digits than its factorization.

198686868704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326787642 (or 326787634 counting only the distinct ones).

The product of its (nonzero) digits is 222953472, while the sum is 71.

The spelling of 198686868704 in words is "one hundred ninety-eight billion, six hundred eighty-six million, eight hundred sixty-eight thousand, seven hundred four".