71606171733797 has 2 divisors, whose sum is σ = 71606171733798. Its totient is φ = 71606171733796.

The previous prime is 71606171733793. The next prime is 71606171733893. The reversal of 71606171733797 is 79733717160617.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36082294977316 + 35523876756481 = 6006854^2 + 5960191^2 .

It is a cyclic number.

It is not a de Polignac number, because 71606171733797 - 2² = 71606171733793 is a prime.

It is a super-2 number, since 2×71606171733797² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71606171733791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35803085866898 + 35803085866899.

It is an arithmetic number, because the mean of its divisors is an integer number (35803085866899).

Almost surely, 2^{71606171733797} is an apocalyptic number.

It is an amenable number.

71606171733797 is a deficient number, since it is larger than the sum of its proper divisors (1).

71606171733797 is an equidigital number, since it uses as much as digits as its factorization.

71606171733797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 49009212, while the sum is 65.

The spelling of 71606171733797 in words is "seventy-one trillion, six hundred six billion, one hundred seventy-one million, seven hundred thirty-three thousand, seven hundred ninety-seven".