205145113341011 has 4 divisors (see below), whose sum is σ = 214064466094992. Its totient is φ = 196225760587032.

The previous prime is 205145113340989. The next prime is 205145113341017. The reversal of 205145113341011 is 110143311541502.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-205145113341011 is a prime.

It is a super-3 number, since 3×205145113341011³ (a number of 44 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205145113341017) 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, 4459676376956 + ... + 4459676377001.

It is an arithmetic number, because the mean of its divisors is an integer number (53516116523748).

Almost surely, 2^{205145113341011} is an apocalyptic number.

205145113341011 is a deficient number, since it is larger than the sum of its proper divisors (8919352753981).

205145113341011 is an equidigital number, since it uses as much as digits as its factorization.

205145113341011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8919352753980.

The product of its (nonzero) digits is 7200, while the sum is 32.

Adding to 205145113341011 its reverse (110143311541502), we get a palindrome (315288424882513).

The spelling of 205145113341011 in words is "two hundred five trillion, one hundred forty-five billion, one hundred thirteen million, three hundred forty-one thousand, eleven".