205430204031064 has 8 divisors (see below), whose sum is σ = 385181632558260. Its totient is φ = 102715102015528.

The previous prime is 205430204030993. The next prime is 205430204031071. The reversal of 205430204031064 is 460130402034502.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 12839387751934 + ... + 12839387751949.

Almost surely, 2^{205430204031064} is an apocalyptic number.

It is an amenable number.

205430204031064 is a deficient number, since it is larger than the sum of its proper divisors (179751428527196).

205430204031064 is a wasteful number, since it uses less digits than its factorization.

205430204031064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25678775503889 (or 25678775503885 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 34.

Adding to 205430204031064 its reverse (460130402034502), we get a palindrome (665560606065566).

The spelling of 205430204031064 in words is "two hundred five trillion, four hundred thirty billion, two hundred four million, thirty-one thousand, sixty-four".