6542749759 has 8 divisors (see below), whose sum is σ = 8052615200. Its totient is φ = 5176681056.

The previous prime is 6542749739. The next prime is 6542749771. The reversal of 6542749759 is 9579472456.

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-6542749759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6542749709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35949084 + ... + 35949265.

It is an arithmetic number, because the mean of its divisors is an integer number (1006576900).

Almost surely, 2^6542749759 is an apocalyptic number.

6542749759 is a deficient number, since it is larger than the sum of its proper divisors (1509865441).

6542749759 is a wasteful number, since it uses less digits than its factorization.

6542749759 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71898369.

The product of its digits is 19051200, while the sum is 58.

The square root of 6542749759 is about 80887.2657406591. The cubic root of 6542749759 is about 1870.3380249133.

The spelling of 6542749759 in words is "six billion, five hundred forty-two million, seven hundred forty-nine thousand, seven hundred fifty-nine".