205410451135 has 32 divisors (see below), whose sum is σ = 255468331008. Its totient is φ = 158388341760.

The previous prime is 205410451109. The next prime is 205410451159. The reversal of 205410451135 is 531154014502.

It is not a de Polignac number, because 205410451135 - 2¹⁹ = 205409926847 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 205410451097 and 205410451106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61443274 + ... + 61446616.

It is an arithmetic number, because the mean of its divisors is an integer number (7983385344).

Almost surely, 2^205410451135 is an apocalyptic number.

205410451135 is a deficient number, since it is larger than the sum of its proper divisors (50057879873).

205410451135 is a wasteful number, since it uses less digits than its factorization.

205410451135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4855.

The product of its (nonzero) digits is 12000, while the sum is 31.

Adding to 205410451135 its reverse (531154014502), we get a palindrome (736564465637).

The spelling of 205410451135 in words is "two hundred five billion, four hundred ten million, four hundred fifty-one thousand, one hundred thirty-five".