205411020130165 has 8 divisors (see below), whose sum is σ = 248796899148960. Its totient is φ = 162793032775632.

The previous prime is 205411020130157. The next prime is 205411020130213. The reversal of 205411020130165 is 561031020114502.

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 205411020130165 - 2³ = 205411020130157 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191972915475 + ... + 191972916544.

It is an arithmetic number, because the mean of its divisors is an integer number (31099612393620).

Almost surely, 2^{205411020130165} is an apocalyptic number.

It is an amenable number.

205411020130165 is a deficient number, since it is larger than the sum of its proper divisors (43385879018795).

205411020130165 is a wasteful number, since it uses less digits than its factorization.

205411020130165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383945832131.

The product of its (nonzero) digits is 7200, while the sum is 31.

Adding to 205411020130165 its reverse (561031020114502), we get a palindrome (766442040244667).

The spelling of 205411020130165 in words is "two hundred five trillion, four hundred eleven billion, twenty million, one hundred thirty thousand, one hundred sixty-five".