71316407693 has 4 divisors (see below), whose sum is σ = 71316942048. Its totient is φ = 71315873340.

The previous prime is 71316407647. The next prime is 71316407713. The reversal of 71316407693 is 39670461317.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 39670461317 = 2351 ⋅16873867.

It is a cyclic number.

It is not a de Polignac number, because 71316407693 - 2²⁰ = 71315359117 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 (71316407093) 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, 121298 + ... + 396668.

It is an arithmetic number, because the mean of its divisors is an integer number (17829235512).

Almost surely, 2^71316407693 is an apocalyptic number.

It is an amenable number.

71316407693 is a deficient number, since it is larger than the sum of its proper divisors (534355).

71316407693 is a wasteful number, since it uses less digits than its factorization.

71316407693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534354.

The product of its (nonzero) digits is 571536, while the sum is 47.

The spelling of 71316407693 in words is "seventy-one billion, three hundred sixteen million, four hundred seven thousand, six hundred ninety-three".