71305010671 has 4 divisors (see below), whose sum is σ = 71997292432. Its totient is φ = 70612728912.

The previous prime is 71305010611. The next prime is 71305010701. The reversal of 71305010671 is 17601050317.

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

It is a cyclic number.

It is not a de Polignac number, because 71305010671 - 2¹³ = 71305002479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71305010611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 346140726 + ... + 346140931.

It is an arithmetic number, because the mean of its divisors is an integer number (17999323108).

Almost surely, 2^71305010671 is an apocalyptic number.

71305010671 is a deficient number, since it is larger than the sum of its proper divisors (692281761).

71305010671 is a wasteful number, since it uses less digits than its factorization.

71305010671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692281760.

The product of its (nonzero) digits is 4410, while the sum is 31.

Adding to 71305010671 its reverse (17601050317), we get a palindrome (88906060988).

The spelling of 71305010671 in words is "seventy-one billion, three hundred five million, ten thousand, six hundred seventy-one".