205303143662464 has 16 divisors (see below), whose sum is σ = 409002356515320. Its totient is φ = 102651571831168.

The previous prime is 205303143662429. The next prime is 205303143662473. The reversal of 205303143662464 is 464266341303502.

It is a tau number, because it is divible by the number of its divisors (16).

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, 801965404804 + ... + 801965405059.

Almost surely, 2^{205303143662464} is an apocalyptic number.

It is an amenable number.

205303143662464 is a deficient number, since it is larger than the sum of its proper divisors (203699212852856).

205303143662464 is an equidigital number, since it uses as much as digits as its factorization.

205303143662464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1603930809877 (or 1603930809865 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 49.

Adding to 205303143662464 its reverse (464266341303502), we get a palindrome (669569484965966).

The spelling of 205303143662464 in words is "two hundred five trillion, three hundred three billion, one hundred forty-three million, six hundred sixty-two thousand, four hundred sixty-four".