198787878702112 has 96 divisors (see below), whose sum is σ = 474713160727680. Its totient is φ = 79991977021440.

The previous prime is 198787878702109. The next prime is 198787878702151. The reversal of 198787878702112 is 211207878787891.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60698839 + ... + 63889942.

It is an arithmetic number, because the mean of its divisors is an integer number (4944928757580).

Almost surely, 2^{198787878702112} is an apocalyptic number.

It is an amenable number.

198787878702112 is an abundant number, since it is smaller than the sum of its proper divisors (275925282025568).

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

198787878702112 is a wasteful number, since it uses less digits than its factorization.

198787878702112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124589234 (or 124589226 counting only the distinct ones).

The product of its (nonzero) digits is 354041856, while the sum is 76.

The spelling of 198787878702112 in words is "one hundred ninety-eight trillion, seven hundred eighty-seven billion, eight hundred seventy-eight million, seven hundred two thousand, one hundred twelve".