6543737243 has 8 divisors (see below), whose sum is σ = 6629638080. Its totient is φ = 6457913280.

The previous prime is 6543737159. The next prime is 6543737279. The reversal of 6543737243 is 3427373456.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6543737243 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6543737194 and 6543737203.

It is not an unprimeable number, because it can be changed into a prime (6543797243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163433 + ... + 199493.

It is an arithmetic number, because the mean of its divisors is an integer number (828704760).

Almost surely, 2^6543737243 is an apocalyptic number.

6543737243 is a deficient number, since it is larger than the sum of its proper divisors (85900837).

6543737243 is a wasteful number, since it uses less digits than its factorization.

6543737243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38437.

The product of its digits is 1270080, while the sum is 44.

The square root of 6543737243 is about 80893.3695861410. The cubic root of 6543737243 is about 1870.4321156260.

The spelling of 6543737243 in words is "six billion, five hundred forty-three million, seven hundred thirty-seven thousand, two hundred forty-three".