199044401771 has 2 divisors, whose sum is σ = 199044401772. Its totient is φ = 199044401770.

The previous prime is 199044401753. The next prime is 199044401783. The reversal of 199044401771 is 177104440991.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 199044401771 - 2¹⁰ = 199044400747 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (199044401701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99522200885 + 99522200886.

It is an arithmetic number, because the mean of its divisors is an integer number (99522200886).

Almost surely, 2^199044401771 is an apocalyptic number.

199044401771 is a deficient number, since it is larger than the sum of its proper divisors (1).

199044401771 is an equidigital number, since it uses as much as digits as its factorization.

199044401771 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 254016, while the sum is 47.

The spelling of 199044401771 in words is "one hundred ninety-nine billion, forty-four million, four hundred one thousand, seven hundred seventy-one".