71161607917 has 8 divisors (see below), whose sum is σ = 72245527776. Its totient is φ = 70078329552.

The previous prime is 71161607903. The next prime is 71161607939. The reversal of 71161607917 is 71970616117.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71161607917 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 (71161607987) 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, 65583 + ... + 382915.

It is an arithmetic number, because the mean of its divisors is an integer number (9030690972).

Almost surely, 2^71161607917 is an apocalyptic number.

It is an amenable number.

71161607917 is a deficient number, since it is larger than the sum of its proper divisors (1083919859).

71161607917 is a wasteful number, since it uses less digits than its factorization.

71161607917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320747.

The product of its (nonzero) digits is 111132, while the sum is 46.

The spelling of 71161607917 in words is "seventy-one billion, one hundred sixty-one million, six hundred seven thousand, nine hundred seventeen".