404171142161 has 2 divisors, whose sum is σ = 404171142162. Its totient is φ = 404171142160.

The previous prime is 404171142131. The next prime is 404171142187. The reversal of 404171142161 is 161241171404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 316258892161 + 87912250000 = 562369^2 + 296500^2 .

It is a cyclic number.

It is not a de Polignac number, because 404171142161 - 2¹⁴ = 404171125777 is a prime.

It is not a weakly prime, because it can be changed into another prime (404171142101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202085571080 + 202085571081.

It is an arithmetic number, because the mean of its divisors is an integer number (202085571081).

Almost surely, 2^404171142161 is an apocalyptic number.

It is an amenable number.

404171142161 is a deficient number, since it is larger than the sum of its proper divisors (1).

404171142161 is an equidigital number, since it uses as much as digits as its factorization.

404171142161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 32.

The spelling of 404171142161 in words is "four hundred four billion, one hundred seventy-one million, one hundred forty-two thousand, one hundred sixty-one".