199969700868 has 72 divisors (see below), whose sum is σ = 580280949248. Its totient is φ = 56877977088.

The previous prime is 199969700773. The next prime is 199969700869. The reversal of 199969700868 is 868007969991.

It is a junction number, because it is equal to n+sod(n) for n = 199969700796 and 199969700805.

It is not an unprimeable number, because it can be changed into a prime (199969700869) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1723021 + ... + 1835412.

Almost surely, 2^199969700868 is an apocalyptic number.

199969700868 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

199969700868 is an abundant number, since it is smaller than the sum of its proper divisors (380311248380).

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

199969700868 is a wasteful number, since it uses less digits than its factorization.

199969700868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3558673 (or 3558668 counting only the distinct ones).

The product of its (nonzero) digits is 105815808, while the sum is 72.

The spelling of 199969700868 in words is "one hundred ninety-nine billion, nine hundred sixty-nine million, seven hundred thousand, eight hundred sixty-eight".