199950868059991 has 8 divisors (see below), whose sum is σ = 203938595974400. Its totient is φ = 195999557752440.

The previous prime is 199950868059989. The next prime is 199950868060001.

199950868059991 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is not a de Polignac number, because 199950868059991 - 2¹ = 199950868059989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199950868059191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9104390625 + ... + 9104412586.

It is an arithmetic number, because the mean of its divisors is an integer number (25492324496800).

Almost surely, 2^{199950868059991} is an apocalyptic number.

199950868059991 is a deficient number, since it is larger than the sum of its proper divisors (3987727914409).

199950868059991 is a wasteful number, since it uses less digits than its factorization.

199950868059991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18208803429.

The product of its (nonzero) digits is 5101833600, while the sum is 88.

The spelling of 199950868059991 in words is "one hundred ninety-nine trillion, nine hundred fifty billion, eight hundred sixty-eight million, fifty-nine thousand, nine hundred ninety-one".