71197575488 has 56 divisors (see below), whose sum is σ = 152456388000. Its totient is φ = 32794375680.

The previous prime is 71197575481. The next prime is 71197575511. The reversal of 71197575488 is 88457579117.

It is a self number, because there is not a number n which added to its sum of digits gives 71197575488.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71197575481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 329423 + ... + 500913.

It is an arithmetic number, because the mean of its divisors is an integer number (2722435500).

Almost surely, 2^71197575488 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 71197575488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76228194000).

71197575488 is an abundant number, since it is smaller than the sum of its proper divisors (81258812512).

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

71197575488 is a wasteful number, since it uses less digits than its factorization.

71197575488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172015 (or 172005 counting only the distinct ones).

The product of its digits is 19756800, while the sum is 62.

The spelling of 71197575488 in words is "seventy-one billion, one hundred ninety-seven million, five hundred seventy-five thousand, four hundred eighty-eight".