5971644817709 has 2 divisors, whose sum is σ = 5971644817710. Its totient is φ = 5971644817708.

The previous prime is 5971644817703. The next prime is 5971644817727. The reversal of 5971644817709 is 9077184461795.

5971644817709 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5418699396100 + 552945421609 = 2327810^2 + 743603^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5971644817709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5971644817703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2985822408854 + 2985822408855.

It is an arithmetic number, because the mean of its divisors is an integer number (2985822408855).

Almost surely, 2^{5971644817709} is an apocalyptic number.

It is an amenable number.

5971644817709 is a deficient number, since it is larger than the sum of its proper divisors (1).

5971644817709 is an equidigital number, since it uses as much as digits as its factorization.

5971644817709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 106686720, while the sum is 68.

The spelling of 5971644817709 in words is "five trillion, nine hundred seventy-one billion, six hundred forty-four million, eight hundred seventeen thousand, seven hundred nine".