205165416041 has 4 divisors (see below), whose sum is σ = 205170414672. Its totient is φ = 205160417412.

The previous prime is 205165416013. The next prime is 205165416061. The reversal of 205165416041 is 140614561502.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 205165416041 - 2¹⁰ = 205165415017 is a prime.

It is a super-2 number, since 2×205165416041² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 205165415992 and 205165416010.

It is not an unprimeable number, because it can be changed into a prime (205165416061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2437235 + ... + 2520008.

It is an arithmetic number, because the mean of its divisors is an integer number (51292603668).

Almost surely, 2^205165416041 is an apocalyptic number.

It is an amenable number.

205165416041 is a deficient number, since it is larger than the sum of its proper divisors (4998631).

205165416041 is an equidigital number, since it uses as much as digits as its factorization.

205165416041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4998630.

The product of its (nonzero) digits is 28800, while the sum is 35.

Adding to 205165416041 its reverse (140614561502), we get a palindrome (345779977543).

The spelling of 205165416041 in words is "two hundred five billion, one hundred sixty-five million, four hundred sixteen thousand, forty-one".