199660362211829 has 2 divisors, whose sum is σ = 199660362211830. Its totient is φ = 199660362211828.

The previous prime is 199660362211819. The next prime is 199660362211841. The reversal of 199660362211829 is 928112263066991.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129768504993604 + 69891857218225 = 11391598^2 + 8360135^2 .

It is a cyclic number.

It is not a de Polignac number, because 199660362211829 - 2⁴ = 199660362211813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199660362211819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99830181105914 + 99830181105915.

It is an arithmetic number, because the mean of its divisors is an integer number (99830181105915).

Almost surely, 2^{199660362211829} is an apocalyptic number.

It is an amenable number.

199660362211829 is a deficient number, since it is larger than the sum of its proper divisors (1).

199660362211829 is an equidigital number, since it uses as much as digits as its factorization.

199660362211829 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30233088, while the sum is 65.

The spelling of 199660362211829 in words is "one hundred ninety-nine trillion, six hundred sixty billion, three hundred sixty-two million, two hundred eleven thousand, eight hundred twenty-nine".