71579783808 has 256 divisors, whose sum is σ = 227880240000. Its totient is φ = 21988786176.

The previous prime is 71579783801. The next prime is 71579783809. The reversal of 71579783808 is 80838797517.

It is not an unprimeable number, because it can be changed into a prime (71579783801) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45331563 + ... + 45333141.

Almost surely, 2^71579783808 is an apocalyptic number.

71579783808 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71579783808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113940120000).

71579783808 is an abundant number, since it is smaller than the sum of its proper divisors (156300456192).

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

71579783808 is a wasteful number, since it uses less digits than its factorization.

71579783808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2624 (or 2606 counting only the distinct ones).

The product of its (nonzero) digits is 23708160, while the sum is 63.

The spelling of 71579783808 in words is "seventy-one billion, five hundred seventy-nine million, seven hundred eighty-three thousand, eight hundred eight".