53205703717 has 2 divisors, whose sum is σ = 53205703718. Its totient is φ = 53205703716.

The previous prime is 53205703699. The next prime is 53205703729. The reversal of 53205703717 is 71730750235.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26885832961 + 26319870756 = 163969^2 + 162234^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53205703717 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53205703717.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53205703757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26602851858 + 26602851859.

It is an arithmetic number, because the mean of its divisors is an integer number (26602851859).

Almost surely, 2^53205703717 is an apocalyptic number.

It is an amenable number.

53205703717 is a deficient number, since it is larger than the sum of its proper divisors (1).

53205703717 is an equidigital number, since it uses as much as digits as its factorization.

53205703717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 154350, while the sum is 40.

The spelling of 53205703717 in words is "fifty-three billion, two hundred five million, seven hundred three thousand, seven hundred seventeen".