647016728539 has 2 divisors, whose sum is σ = 647016728540. Its totient is φ = 647016728538.

The previous prime is 647016728521. The next prime is 647016728609. The reversal of 647016728539 is 935827610746.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 647016728539 - 2⁷ = 647016728411 is a prime.

It is not a weakly prime, because it can be changed into another prime (647016728339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 323508364269 + 323508364270.

It is an arithmetic number, because the mean of its divisors is an integer number (323508364270).

It is a 1-persistent number, because it is pandigital, but 2⋅647016728539 = 1294033457078 is not.

Almost surely, 2^647016728539 is an apocalyptic number.

647016728539 is a deficient number, since it is larger than the sum of its proper divisors (1).

647016728539 is an equidigital number, since it uses as much as digits as its factorization.

647016728539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15240960, while the sum is 58.

The spelling of 647016728539 in words is "six hundred forty-seven billion, sixteen million, seven hundred twenty-eight thousand, five hundred thirty-nine".