205045051111 has 2 divisors, whose sum is σ = 205045051112. Its totient is φ = 205045051110.

The previous prime is 205045051061. The next prime is 205045051153. The reversal of 205045051111 is 111150540502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 205045051111 - 2¹⁷ = 205044920039 is a prime.

It is a super-2 number, since 2×205045051111² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (205045052111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102522525555 + 102522525556.

It is an arithmetic number, because the mean of its divisors is an integer number (102522525556).

Almost surely, 2^205045051111 is an apocalyptic number.

205045051111 is a deficient number, since it is larger than the sum of its proper divisors (1).

205045051111 is an equidigital number, since it uses as much as digits as its factorization.

205045051111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1000, while the sum is 25.

Adding to 205045051111 its reverse (111150540502), we get a palindrome (316195591613).

The spelling of 205045051111 in words is "two hundred five billion, forty-five million, fifty-one thousand, one hundred eleven".