71616967917 has 16 divisors (see below), whose sum is σ = 104242897728. Its totient is φ = 43373905280.

The previous prime is 71616967871. The next prime is 71616967921. The reversal of 71616967917 is 71976961617.

It is a cyclic number.

It is not a de Polignac number, because 71616967917 - 2¹⁶ = 71616902381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71616967517) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 709938 + ... + 804515.

It is an arithmetic number, because the mean of its divisors is an integer number (6515181108).

Almost surely, 2^71616967917 is an apocalyptic number.

It is an amenable number.

71616967917 is a deficient number, since it is larger than the sum of its proper divisors (32625929811).

71616967917 is a wasteful number, since it uses less digits than its factorization.

71616967917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1515900.

The product of its digits is 6001128, while the sum is 60.

The spelling of 71616967917 in words is "seventy-one billion, six hundred sixteen million, nine hundred sixty-seven thousand, nine hundred seventeen".