71688072248 has 64 divisors (see below), whose sum is σ = 147871180800. Its totient is φ = 32379534720.

The previous prime is 71688072233. The next prime is 71688072299. The reversal of 71688072248 is 84227088617.

It is a self number, because there is not a number n which added to its sum of digits gives 71688072248.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1342133 + ... + 1394523.

It is an arithmetic number, because the mean of its divisors is an integer number (2310487200).

Almost surely, 2^71688072248 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 71688072248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73935590400).

71688072248 is an abundant number, since it is smaller than the sum of its proper divisors (76183108552).

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

71688072248 is a wasteful number, since it uses less digits than its factorization.

71688072248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52692 (or 52688 counting only the distinct ones).

The product of its (nonzero) digits is 2408448, while the sum is 53.

The spelling of 71688072248 in words is "seventy-one billion, six hundred eighty-eight million, seventy-two thousand, two hundred forty-eight".