71059712920 has 128 divisors (see below), whose sum is σ = 184862966400. Its totient is φ = 24078974976.

The previous prime is 71059712903. The next prime is 71059712939. The reversal of 71059712920 is 2921795017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27403144 + ... + 27405736.

It is an arithmetic number, because the mean of its divisors is an integer number (1444241925).

Almost surely, 2^71059712920 is an apocalyptic number.

71059712920 is a gapful number since it is divisible by the number (70) 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 71059712920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92431483200).

71059712920 is an abundant number, since it is smaller than the sum of its proper divisors (113803253480).

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

71059712920 is a wasteful number, since it uses less digits than its factorization.

71059712920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3717 (or 3713 counting only the distinct ones).

The product of its (nonzero) digits is 79380, while the sum is 43.

The spelling of 71059712920 in words is "seventy-one billion, fifty-nine million, seven hundred twelve thousand, nine hundred twenty".