6543520004043 has 48 divisors (see below), whose sum is σ = 11106380113920. Its totient is φ = 3670978924800.

The previous prime is 6543520004011. The next prime is 6543520004057. The reversal of 6543520004043 is 3404000253456.

6543520004043 is a `hidden beast` number, since 6 + 5 + 43 + 5 + 200 + 0 + 404 + 3 = 666.

It is not a de Polignac number, because 6543520004043 - 2⁵ = 6543520004011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6543520003989 and 6543520004007.

It is not an unprimeable number, because it can be changed into a prime (6543520004143) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 46280158 + ... + 46421331.

It is an arithmetic number, because the mean of its divisors is an integer number (231382919040).

Almost surely, 2^{6543520004043} is an apocalyptic number.

6543520004043 is a deficient number, since it is larger than the sum of its proper divisors (4562860109877).

6543520004043 is a wasteful number, since it uses less digits than its factorization.

6543520004043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92701560 (or 92701557 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 36.

Adding to 6543520004043 its reverse (3404000253456), we get a palindrome (9947520257499).

The spelling of 6543520004043 in words is "six trillion, five hundred forty-three billion, five hundred twenty million, four thousand, forty-three".