199632027173 has 2 divisors, whose sum is σ = 199632027174. Its totient is φ = 199632027172.

The previous prime is 199632027131. The next prime is 199632027209. The reversal of 199632027173 is 371720236991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 173657225284 + 25974801889 = 416722^2 + 161167^2 .

It is a cyclic number.

It is not a de Polignac number, because 199632027173 - 2⁶ = 199632027109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199632027103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99816013586 + 99816013587.

It is an arithmetic number, because the mean of its divisors is an integer number (99816013587).

Almost surely, 2^199632027173 is an apocalyptic number.

It is an amenable number.

199632027173 is a deficient number, since it is larger than the sum of its proper divisors (1).

199632027173 is an equidigital number, since it uses as much as digits as its factorization.

199632027173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 857304, while the sum is 50.

The spelling of 199632027173 in words is "one hundred ninety-nine billion, six hundred thirty-two million, twenty-seven thousand, one hundred seventy-three".