71316542656 has 56 divisors (see below), whose sum is σ = 144624795840. Its totient is φ = 34876649472.

The previous prime is 71316542651. The next prime is 71316542657. The reversal of 71316542656 is 65624561317.

It is not an unprimeable number, because it can be changed into a prime (71316542651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5133736 + ... + 5147608.

It is an arithmetic number, because the mean of its divisors is an integer number (2582585640).

Almost surely, 2^71316542656 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 71316542656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72312397920).

71316542656 is an abundant number, since it is smaller than the sum of its proper divisors (73308253184).

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

71316542656 is a wasteful number, since it uses less digits than its factorization.

71316542656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15641 (or 15631 counting only the distinct ones).

The product of its digits is 907200, while the sum is 46.

The spelling of 71316542656 in words is "seventy-one billion, three hundred sixteen million, five hundred forty-two thousand, six hundred fifty-six".