71745660317 has 8 divisors (see below), whose sum is σ = 74365781376. Its totient is φ = 69171106752.

The previous prime is 71745660313. The next prime is 71745660341. The reversal of 71745660317 is 71306654717.

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 71745660317 - 2² = 71745660313 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71745660313) 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, 11388668 + ... + 11394965.

It is an arithmetic number, because the mean of its divisors is an integer number (9295722672).

Almost surely, 2^71745660317 is an apocalyptic number.

It is an amenable number.

71745660317 is a deficient number, since it is larger than the sum of its proper divisors (2620121059).

71745660317 is a wasteful number, since it uses less digits than its factorization.

71745660317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22783747.

The product of its (nonzero) digits is 740880, while the sum is 47.

The spelling of 71745660317 in words is "seventy-one billion, seven hundred forty-five million, six hundred sixty thousand, three hundred seventeen".