71018313216 has 160 divisors (see below), whose sum is σ = 194333990400. Its totient is φ = 23038156800.

The previous prime is 71018313209. The next prime is 71018313241. The reversal of 71018313216 is 61231381017.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9149145 + ... + 9156903.

It is an arithmetic number, because the mean of its divisors is an integer number (1214587440).

Almost surely, 2^71018313216 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 71018313216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97166995200).

71018313216 is an abundant number, since it is smaller than the sum of its proper divisors (123315677184).

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

71018313216 is a wasteful number, since it uses less digits than its factorization.

71018313216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7940 (or 7924 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 33.

The spelling of 71018313216 in words is "seventy-one billion, eighteen million, three hundred thirteen thousand, two hundred sixteen".