198661016044 has 12 divisors (see below), whose sum is σ = 347692282168. Its totient is φ = 99320364000.

The previous prime is 198661016039. The next prime is 198661016051. The reversal of 198661016044 is 440610166891.

It is a junction number, because it is equal to n+sod(n) for n = 198661015985 and 198661016003.

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, 2491857 + ... + 2570344.

Almost surely, 2^198661016044 is an apocalyptic number.

It is an amenable number.

198661016044 is a deficient number, since it is larger than the sum of its proper divisors (149031266124).

198661016044 is a wasteful number, since it uses less digits than its factorization.

198661016044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5072016 (or 5072014 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 46.

The spelling of 198661016044 in words is "one hundred ninety-eight billion, six hundred sixty-one million, sixteen thousand, forty-four".