71207056002217 has 4 divisors (see below), whose sum is σ = 71207131372740. Its totient is φ = 71206980631696.

The previous prime is 71207056002101. The next prime is 71207056002239. The reversal of 71207056002217 is 71220065070217.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7735624127401 + 63471431874816 = 2781299^2 + 7966896^2 .

It is a cyclic number.

It is not a de Polignac number, because 71207056002217 - 2¹¹ = 71207056000169 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71207056002217.

It is not an unprimeable number, because it can be changed into a prime (71207056009217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36249898 + ... + 38163715.

It is an arithmetic number, because the mean of its divisors is an integer number (17801782843185).

Almost surely, 2^{71207056002217} is an apocalyptic number.

It is an amenable number.

71207056002217 is a deficient number, since it is larger than the sum of its proper divisors (75370523).

71207056002217 is an equidigital number, since it uses as much as digits as its factorization.

71207056002217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75370522.

The product of its (nonzero) digits is 82320, while the sum is 40.

The spelling of 71207056002217 in words is "seventy-one trillion, two hundred seven billion, fifty-six million, two thousand, two hundred seventeen".