71797797232 has 60 divisors (see below), whose sum is σ = 162270206800. Its totient is φ = 30761977344.

The previous prime is 71797797221. The next prime is 71797797293. The reversal of 71797797232 is 23279779717.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19848288 + ... + 19851904.

Almost surely, 2^71797797232 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 71797797232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81135103400).

71797797232 is an abundant number, since it is smaller than the sum of its proper divisors (90472409568).

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

71797797232 is an frugal number, since it uses more digits than its factorization.

71797797232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7263 (or 3626 counting only the distinct ones).

The product of its digits is 16336404, while the sum is 61.

The spelling of 71797797232 in words is "seventy-one billion, seven hundred ninety-seven million, seven hundred ninety-seven thousand, two hundred thirty-two".