71320617767 has 8 divisors (see below), whose sum is σ = 81549704736. Its totient is φ = 61101637632.

The previous prime is 71320617757. The next prime is 71320617773. The reversal of 71320617767 is 76771602317.

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

It is not a de Polignac number, because 71320617767 - 2⁴ = 71320617751 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 (71320617707) 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, 2511578 + ... + 2539815.

It is an arithmetic number, because the mean of its divisors is an integer number (10193713092).

Almost surely, 2^71320617767 is an apocalyptic number.

71320617767 is a deficient number, since it is larger than the sum of its proper divisors (10229086969).

71320617767 is a wasteful number, since it uses less digits than its factorization.

71320617767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5053417.

The product of its (nonzero) digits is 518616, while the sum is 47.

The spelling of 71320617767 in words is "seventy-one billion, three hundred twenty million, six hundred seventeen thousand, seven hundred sixty-seven".