199011481667 has 2 divisors, whose sum is σ = 199011481668. Its totient is φ = 199011481666.

The previous prime is 199011481663. The next prime is 199011481693. The reversal of 199011481667 is 766184110991.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 199011481667 - 2² = 199011481663 is a prime.

It is not a weakly prime, because it can be changed into another prime (199011481663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99505740833 + 99505740834.

It is an arithmetic number, because the mean of its divisors is an integer number (99505740834).

Almost surely, 2^199011481667 is an apocalyptic number.

199011481667 is a deficient number, since it is larger than the sum of its proper divisors (1).

199011481667 is an equidigital number, since it uses as much as digits as its factorization.

199011481667 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 653184, while the sum is 53.

The spelling of 199011481667 in words is "one hundred ninety-nine billion, eleven million, four hundred eighty-one thousand, six hundred sixty-seven".