198045438912 has 56 divisors (see below), whose sum is σ = 582216920400. Its totient is φ = 66015145728.

The previous prime is 198045438859. The next prime is 198045438931. The reversal of 198045438912 is 219834540891.

It is a happy number.

198045438912 is a `hidden beast` number, since 1 + 9 + 8 + 0 + 4 + 543 + 8 + 91 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57303087 + ... + 57306542.

Almost surely, 2^198045438912 is an apocalyptic number.

198045438912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

198045438912 is an abundant number, since it is smaller than the sum of its proper divisors (384171481488).

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

198045438912 is a wasteful number, since it uses less digits than its factorization.

198045438912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114609650 (or 114609634 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 54.

The spelling of 198045438912 in words is "one hundred ninety-eight billion, forty-five million, four hundred thirty-eight thousand, nine hundred twelve".