5171775905869 has 2 divisors, whose sum is σ = 5171775905870. Its totient is φ = 5171775905868.

The previous prime is 5171775905851. The next prime is 5171775905899. The reversal of 5171775905869 is 9685095771715.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3293335710025 + 1878440195844 = 1814755^2 + 1370562^2 .

It is a cyclic number.

It is not a de Polignac number, because 5171775905869 - 2¹¹ = 5171775903821 is a prime.

It is a super-2 number, since 2×5171775905869² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 5171775905798 and 5171775905807.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5171775905809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2585887952934 + 2585887952935.

It is an arithmetic number, because the mean of its divisors is an integer number (2585887952935).

Almost surely, 2^{5171775905869} is an apocalyptic number.

It is an amenable number.

5171775905869 is a deficient number, since it is larger than the sum of its proper divisors (1).

5171775905869 is an equidigital number, since it uses as much as digits as its factorization.

5171775905869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 166698000, while the sum is 70.

The spelling of 5171775905869 in words is "five trillion, one hundred seventy-one billion, seven hundred seventy-five million, nine hundred five thousand, eight hundred sixty-nine".