71323211616 has 96 divisors (see below), whose sum is σ = 192371574528. Its totient is φ = 23121262080.

The previous prime is 71323211611. The next prime is 71323211723. The reversal of 71323211616 is 61611232317.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71323211611) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 12681381 + ... + 12687003.

It is an arithmetic number, because the mean of its divisors is an integer number (2003870568).

Almost surely, 2^71323211616 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 71323211616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96185787264).

71323211616 is an abundant number, since it is smaller than the sum of its proper divisors (121048362912).

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

71323211616 is a wasteful number, since it uses less digits than its factorization.

71323211616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9244 (or 9236 counting only the distinct ones).

The product of its digits is 9072, while the sum is 33.

The spelling of 71323211616 in words is "seventy-one billion, three hundred twenty-three million, two hundred eleven thousand, six hundred sixteen".