6403430000543 has 4 divisors (see below), whose sum is σ = 6405190639320. Its totient is φ = 6401669361768.

The previous prime is 6403430000521. The next prime is 6403430000579. The reversal of 6403430000543 is 3450000343046.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6403430000543 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 (6403430003543) 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, 880313933 + ... + 880321206.

It is an arithmetic number, because the mean of its divisors is an integer number (1601297659830).

Almost surely, 2^{6403430000543} is an apocalyptic number.

6403430000543 is a deficient number, since it is larger than the sum of its proper divisors (1760638777).

6403430000543 is a wasteful number, since it uses less digits than its factorization.

6403430000543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1760638776.

The product of its (nonzero) digits is 51840, while the sum is 32.

Adding to 6403430000543 its reverse (3450000343046), we get a palindrome (9853430343589).

The spelling of 6403430000543 in words is "six trillion, four hundred three billion, four hundred thirty million, five hundred forty-three", and thus it is an aban number.