71959690912 has 96 divisors (see below), whose sum is σ = 150975982080. Its totient is φ = 33706229760.

The previous prime is 71959690909. The next prime is 71959690919. The reversal of 71959690912 is 21909695917.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (71959690919) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4812664 + ... + 4827592.

It is an arithmetic number, because the mean of its divisors is an integer number (1572666480).

Almost surely, 2^71959690912 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 71959690912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75487991040).

71959690912 is an abundant number, since it is smaller than the sum of its proper divisors (79016291168).

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

71959690912 is a wasteful number, since it uses less digits than its factorization.

71959690912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15126 (or 15118 counting only the distinct ones).

The product of its (nonzero) digits is 2755620, while the sum is 58.

The spelling of 71959690912 in words is "seventy-one billion, nine hundred fifty-nine million, six hundred ninety thousand, nine hundred twelve".