199381771811 has 8 divisors (see below), whose sum is σ = 200266063680. Its totient is φ = 198497598912.

The previous prime is 199381771793. The next prime is 199381771817. The reversal of 199381771811 is 118177183991.

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 199381771811 - 2⁶ = 199381771747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199381771817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6156086 + ... + 6188388.

It is an arithmetic number, because the mean of its divisors is an integer number (25033257960).

Almost surely, 2^199381771811 is an apocalyptic number.

199381771811 is a deficient number, since it is larger than the sum of its proper divisors (884291869).

199381771811 is a wasteful number, since it uses less digits than its factorization.

199381771811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59485.

The product of its digits is 762048, while the sum is 56.

The spelling of 199381771811 in words is "one hundred ninety-nine billion, three hundred eighty-one million, seven hundred seventy-one thousand, eight hundred eleven".