199679363935877 has 8 divisors (see below), whose sum is σ = 228221907830016. Its totient is φ = 171141050160432.

The previous prime is 199679363935861. The next prime is 199679363935937. The reversal of 199679363935877 is 778539363976991.

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 199679363935877 - 2⁴ = 199679363935861 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 (199679363535877) 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, 1057428518 + ... + 1057617335.

It is an arithmetic number, because the mean of its divisors is an integer number (28527738478752).

Almost surely, 2^{199679363935877} is an apocalyptic number.

It is an amenable number.

199679363935877 is a deficient number, since it is larger than the sum of its proper divisors (28542543894139).

199679363935877 is a wasteful number, since it uses less digits than its factorization.

199679363935877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2115059347.

The product of its digits is 87496446240, while the sum is 92.

The spelling of 199679363935877 in words is "one hundred ninety-nine trillion, six hundred seventy-nine billion, three hundred sixty-three million, nine hundred thirty-five thousand, eight hundred seventy-seven".