199880577966 has 8 divisors (see below), whose sum is σ = 399761155944. Its totient is φ = 66626859320.

The previous prime is 199880577947. The next prime is 199880577983. The reversal of 199880577966 is 669775088991.

It is a sphenic number, since it is the product of 3 distinct primes.

199880577966 is an admirable number.

It is a Curzon number.

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, 16656714825 + ... + 16656714836.

It is an arithmetic number, because the mean of its divisors is an integer number (49970144493).

Almost surely, 2^199880577966 is an apocalyptic number.

199880577966 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

199880577966 is a wasteful number, since it uses less digits than its factorization.

199880577966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33313429666.

The product of its (nonzero) digits is 411505920, while the sum is 75.

The spelling of 199880577966 in words is "one hundred ninety-nine billion, eight hundred eighty million, five hundred seventy-seven thousand, nine hundred sixty-six".