6539252757 has 16 divisors (see below), whose sum is σ = 8956989120. Its totient is φ = 4240570752.

The previous prime is 6539252723. The next prime is 6539252771. The reversal of 6539252757 is 7572529356.

It is not a de Polignac number, because 6539252757 - 2⁶ = 6539252693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6539251757) 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 15 ways as a sum of consecutive naturals, for example, 804369 + ... + 812457.

It is an arithmetic number, because the mean of its divisors is an integer number (559811820).

Almost surely, 2^6539252757 is an apocalyptic number.

It is an amenable number.

6539252757 is a deficient number, since it is larger than the sum of its proper divisors (2417736363).

6539252757 is a wasteful number, since it uses less digits than its factorization.

6539252757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15412.

The product of its digits is 3969000, while the sum is 51.

The square root of 6539252757 is about 80865.6463339037. The cubic root of 6539252757 is about 1870.0047429508.

The spelling of 6539252757 in words is "six billion, five hundred thirty-nine million, two hundred fifty-two thousand, seven hundred fifty-seven".