198783073812 has 12 divisors (see below), whose sum is σ = 463827172256. Its totient is φ = 66261024600.

The previous prime is 198783073807. The next prime is 198783073849. The reversal of 198783073812 is 218370387891.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×198783073812² (a number of 23 digits) contains 22 as substring.

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, 8282628064 + ... + 8282628087.

Almost surely, 2^198783073812 is an apocalyptic number.

198783073812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

198783073812 is an abundant number, since it is smaller than the sum of its proper divisors (265044098444).

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

198783073812 is a wasteful number, since it uses less digits than its factorization.

198783073812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16565256158 (or 16565256156 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 57.

The spelling of 198783073812 in words is "one hundred ninety-eight billion, seven hundred eighty-three million, seventy-three thousand, eight hundred twelve".