200643640263 has 36 divisors (see below), whose sum is σ = 318610022640. Its totient is φ = 121583468160.

The previous prime is 200643640237. The next prime is 200643640313. The reversal of 200643640263 is 362046346002.

200643640263 is a `hidden beast` number, since 2 + 0 + 0 + 6 + 4 + 3 + 640 + 2 + 6 + 3 = 666.

It is not a de Polignac number, because 200643640263 - 2⁵ = 200643640231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200643640063) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 10923295 + ... + 10941647.

Almost surely, 2^200643640263 is an apocalyptic number.

200643640263 is a deficient number, since it is larger than the sum of its proper divisors (117966382377).

200643640263 is a wasteful number, since it uses less digits than its factorization.

200643640263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28420 (or 28406 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 36.

Adding to 200643640263 its reverse (362046346002), we get a palindrome (562689986265).

The spelling of 200643640263 in words is "two hundred billion, six hundred forty-three million, six hundred forty thousand, two hundred sixty-three".