199917285357803 has 8 divisors (see below), whose sum is σ = 215331200832048. Its totient is φ = 184508464562784.

The previous prime is 199917285357793. The next prime is 199917285357817. The reversal of 199917285357803 is 308753582719991.

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 199917285357803 - 2⁸ = 199917285357547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199917285357863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1273588301 + ... + 1273745262.

It is an arithmetic number, because the mean of its divisors is an integer number (26916400104006).

Almost surely, 2^{199917285357803} is an apocalyptic number.

199917285357803 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

199917285357803 is a deficient number, since it is larger than the sum of its proper divisors (15413915474245).

199917285357803 is a wasteful number, since it uses less digits than its factorization.

199917285357803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2547339613.

The product of its (nonzero) digits is 1028764800, while the sum is 77.

The spelling of 199917285357803 in words is "one hundred ninety-nine trillion, nine hundred seventeen billion, two hundred eighty-five million, three hundred fifty-seven thousand, eight hundred three".