199685116512 has 120 divisors (see below), whose sum is σ = 671163924816. Its totient is φ = 57052885248.

The previous prime is 199685116507. The next prime is 199685116513. The reversal of 199685116512 is 215611586991.

It is a happy number.

199685116512 is a `hidden beast` number, since 1 + 9 + 9 + 6 + 8 + 5 + 116 + 512 = 666.

It is a super-2 number, since 2×199685116512² (a number of 23 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199685116513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5484643 + ... + 5520930.

Almost surely, 2^199685116512 is an apocalyptic number.

199685116512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

199685116512 is an abundant number, since it is smaller than the sum of its proper divisors (471478808304).

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

199685116512 is a wasteful number, since it uses less digits than its factorization.

199685116512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11005602 (or 11005585 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 54.

The spelling of 199685116512 in words is "one hundred ninety-nine billion, six hundred eighty-five million, one hundred sixteen thousand, five hundred twelve".