6501442487717 has 2 divisors, whose sum is σ = 6501442487718. Its totient is φ = 6501442487716.

The previous prime is 6501442487669. The next prime is 6501442487791. The reversal of 6501442487717 is 7177842441056.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3900660550081 + 2600781937636 = 1975009^2 + 1612694^2 .

It is a cyclic number.

It is not a de Polignac number, because 6501442487717 - 2¹⁴ = 6501442471333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6501442486717) 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, 3250721243858 + 3250721243859.

It is an arithmetic number, because the mean of its divisors is an integer number (3250721243859).

Almost surely, 2^{6501442487717} is an apocalyptic number.

It is an amenable number.

6501442487717 is a deficient number, since it is larger than the sum of its proper divisors (1).

6501442487717 is an equidigital number, since it uses as much as digits as its factorization.

6501442487717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10536960, while the sum is 56.

The spelling of 6501442487717 in words is "six trillion, five hundred one billion, four hundred forty-two million, four hundred eighty-seven thousand, seven hundred seventeen".