205485615171713 has 8 divisors (see below), whose sum is σ = 206034699874080. Its totient is φ = 204936566819040.

The previous prime is 205485615171701. The next prime is 205485615171719. The reversal of 205485615171713 is 317171516584502.

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 205485615171713 - 2⁶ = 205485615171649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205485615171719) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2252606 + ... + 20397192.

It is an arithmetic number, because the mean of its divisors is an integer number (25754337484260).

Almost surely, 2^{205485615171713} is an apocalyptic number.

It is an amenable number.

205485615171713 is a deficient number, since it is larger than the sum of its proper divisors (549084702367).

205485615171713 is a wasteful number, since it uses less digits than its factorization.

205485615171713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18174847.

The product of its (nonzero) digits is 7056000, while the sum is 56.

The spelling of 205485615171713 in words is "two hundred five trillion, four hundred eighty-five billion, six hundred fifteen million, one hundred seventy-one thousand, seven hundred thirteen".