71616717744 has 320 divisors, whose sum is σ = 225093593088. Its totient is φ = 19331481600.

The previous prime is 71616717721. The next prime is 71616717787. The reversal of 71616717744 is 44771761617.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 23548864 + ... + 23551904.

Almost surely, 2^71616717744 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71616717744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112546796544).

71616717744 is an abundant number, since it is smaller than the sum of its proper divisors (153476875344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71616717744 is a wasteful number, since it uses less digits than its factorization.

71616717744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3196 (or 3190 counting only the distinct ones).

The product of its digits is 1382976, while the sum is 51.

The spelling of 71616717744 in words is "seventy-one billion, six hundred sixteen million, seven hundred seventeen thousand, seven hundred forty-four".