6516542043 has 48 divisors (see below), whose sum is σ = 11115446400. Its totient is φ = 3741493680.

The previous prime is 6516542003. The next prime is 6516542047. The reversal of 6516542043 is 3402456156.

6516542043 is a `hidden beast` number, since 65 + 16 + 542 + 0 + 43 = 666.

It is not a de Polignac number, because 6516542043 - 2¹² = 6516537947 is a prime.

It is a super-3 number, since 3×6516542043³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 6516541989 and 6516542007.

It is not an unprimeable number, because it can be changed into a prime (6516542047) 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, 76828 + ... + 137606.

It is an arithmetic number, because the mean of its divisors is an integer number (231571800).

Almost surely, 2^6516542043 is an apocalyptic number.

6516542043 is a deficient number, since it is larger than the sum of its proper divisors (4598904357).

6516542043 is a wasteful number, since it uses less digits than its factorization.

6516542043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60837 (or 60812 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The square root of 6516542043 is about 80725.1016908619. The cubic root of 6516542043 is about 1867.8374003696.

Adding to 6516542043 its reverse (3402456156), we get a palindrome (9918998199).

The spelling of 6516542043 in words is "six billion, five hundred sixteen million, five hundred forty-two thousand, forty-three".