643300504063 has 4 divisors (see below), whose sum is σ = 735200576080. Its totient is φ = 551400432048.

The previous prime is 643300504061. The next prime is 643300504079. The reversal of 643300504063 is 360405003346.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 643300504063 - 2¹ = 643300504061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (643300504061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45950035998 + ... + 45950036011.

It is an arithmetic number, because the mean of its divisors is an integer number (183800144020).

Almost surely, 2^643300504063 is an apocalyptic number.

643300504063 is a deficient number, since it is larger than the sum of its proper divisors (91900072017).

643300504063 is an equidigital number, since it uses as much as digits as its factorization.

643300504063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91900072016.

The product of its (nonzero) digits is 77760, while the sum is 34.

The spelling of 643300504063 in words is "six hundred forty-three billion, three hundred million, five hundred four thousand, sixty-three".