199980463187 has 2 divisors, whose sum is σ = 199980463188. Its totient is φ = 199980463186.

The previous prime is 199980463183. The next prime is 199980463201. The reversal of 199980463187 is 781364089991.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 199980463187 - 2² = 199980463183 is a prime.

It is not a weakly prime, because it can be changed into another prime (199980463183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99990231593 + 99990231594.

It is an arithmetic number, because the mean of its divisors is an integer number (99990231594).

Almost surely, 2^199980463187 is an apocalyptic number.

199980463187 is a deficient number, since it is larger than the sum of its proper divisors (1).

199980463187 is an equidigital number, since it uses as much as digits as its factorization.

199980463187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23514624, while the sum is 65.

The spelling of 199980463187 in words is "one hundred ninety-nine billion, nine hundred eighty million, four hundred sixty-three thousand, one hundred eighty-seven".