71322539904 has 640 divisors, whose sum is σ = 271208044800. Its totient is φ = 18065203200.

The previous prime is 71322539887. The next prime is 71322539923. The reversal of 71322539904 is 40993522317.

71322539904 is a `hidden beast` number, since 7 + 1 + 3 + 22 + 539 + 90 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 71322539904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 32730687 + ... + 32732865.

It is an arithmetic number, because the mean of its divisors is an integer number (423762570).

Almost surely, 2^71322539904 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 71322539904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135604022400).

71322539904 is an abundant number, since it is smaller than the sum of its proper divisors (199885504896).

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

71322539904 is a wasteful number, since it uses less digits than its factorization.

71322539904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2264 (or 2243 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 45.

The spelling of 71322539904 in words is "seventy-one billion, three hundred twenty-two million, five hundred thirty-nine thousand, nine hundred four".