71039637240 has 384 divisors, whose sum is σ = 263258795520. Its totient is φ = 15204879360.

The previous prime is 71039637233. The next prime is 71039637259. The reversal of 71039637240 is 4273693017.

It is a junction number, because it is equal to n+sod(n) for n = 71039637192 and 71039637201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4333299 + ... + 4349661.

It is an arithmetic number, because the mean of its divisors is an integer number (685569780).

Almost surely, 2^71039637240 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 71039637240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131629397760).

71039637240 is an abundant number, since it is smaller than the sum of its proper divisors (192219158280).

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

71039637240 is a wasteful number, since it uses less digits than its factorization.

71039637240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16435 (or 16420 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 42.

The spelling of 71039637240 in words is "seventy-one billion, thirty-nine million, six hundred thirty-seven thousand, two hundred forty".