71606171033849 has 2 divisors, whose sum is σ = 71606171033850. Its totient is φ = 71606171033848.

The previous prime is 71606171033827. The next prime is 71606171033851. The reversal of 71606171033849 is 94833017160617.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64495868788624 + 7110302245225 = 8030932^2 + 2666515^2 .

It is an emirp because it is prime and its reverse (94833017160617) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71606171033849 - 2²⁴ = 71606154256633 is a prime.

Together with 71606171033851, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 71606171033794 and 71606171033803.

It is not a weakly prime, because it can be changed into another prime (71606171038849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35803085516924 + 35803085516925.

It is an arithmetic number, because the mean of its divisors is an integer number (35803085516925).

Almost surely, 2^{71606171033849} is an apocalyptic number.

It is an amenable number.

71606171033849 is a deficient number, since it is larger than the sum of its proper divisors (1).

71606171033849 is an equidigital number, since it uses as much as digits as its factorization.

71606171033849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4572288, while the sum is 56.

The spelling of 71606171033849 in words is "seventy-one trillion, six hundred six billion, one hundred seventy-one million, thirty-three thousand, eight hundred forty-nine".