71066657215117 has 8 divisors (see below), whose sum is σ = 74812666911200. Its totient is φ = 67321213450704.

The previous prime is 71066657215067. The next prime is 71066657215129. The reversal of 71066657215117 is 71151275666017.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71066657215117 - 2¹⁹ = 71066656690829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71066657215417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141225138 + ... + 141727459.

It is an arithmetic number, because the mean of its divisors is an integer number (9351583363900).

Almost surely, 2^{71066657215117} is an apocalyptic number.

It is an amenable number.

71066657215117 is a deficient number, since it is larger than the sum of its proper divisors (3746009696083).

71066657215117 is a wasteful number, since it uses less digits than its factorization.

71066657215117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282965835.

The product of its (nonzero) digits is 3704400, while the sum is 55.

The spelling of 71066657215117 in words is "seventy-one trillion, sixty-six billion, six hundred fifty-seven million, two hundred fifteen thousand, one hundred seventeen".