205010070171 has 4 divisors (see below), whose sum is σ = 273346760232. Its totient is φ = 136673380112.

The previous prime is 205010070103. The next prime is 205010070173. The reversal of 205010070171 is 171070010502.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 205010070171 - 2¹⁹ = 205009545883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (205010070173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34168345026 + ... + 34168345031.

It is an arithmetic number, because the mean of its divisors is an integer number (68336690058).

Almost surely, 2^205010070171 is an apocalyptic number.

205010070171 is a deficient number, since it is larger than the sum of its proper divisors (68336690061).

205010070171 is an equidigital number, since it uses as much as digits as its factorization.

205010070171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68336690060.

The product of its (nonzero) digits is 490, while the sum is 24.

Adding to 205010070171 its reverse (171070010502), we get a palindrome (376080080673).

The spelling of 205010070171 in words is "two hundred five billion, ten million, seventy thousand, one hundred seventy-one".