71213368152 has 128 divisors (see below), whose sum is σ = 198987840000. Its totient is φ = 21105801216.

The previous prime is 71213368147. The next prime is 71213368201. The reversal of 71213368152 is 25186331217.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 71213368152.

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, 2770174 + ... + 2795762.

It is an arithmetic number, because the mean of its divisors is an integer number (1554592500).

Almost surely, 2^71213368152 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 71213368152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99493920000).

71213368152 is an abundant number, since it is smaller than the sum of its proper divisors (127774471848).

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

71213368152 is a wasteful number, since it uses less digits than its factorization.

71213368152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25993 (or 25989 counting only the distinct ones).

The product of its digits is 60480, while the sum is 39.

Adding to 71213368152 its reverse (25186331217), we get a palindrome (96399699369).

The spelling of 71213368152 in words is "seventy-one billion, two hundred thirteen million, three hundred sixty-eight thousand, one hundred fifty-two".