71447232752 has 40 divisors (see below), whose sum is σ = 165083053056. Its totient is φ = 29288926656.

The previous prime is 71447232709. The next prime is 71447232757. The reversal of 71447232752 is 25723274417.

It is a happy number.

It is a super-2 number, since 2×71447232752² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71447232757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13865288 + ... + 13870439.

Almost surely, 2^71447232752 is an apocalyptic number.

It is an amenable number.

71447232752 is an abundant number, since it is smaller than the sum of its proper divisors (93635820304).

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

71447232752 is a wasteful number, since it uses less digits than its factorization.

71447232752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27735765 (or 27735759 counting only the distinct ones).

The product of its digits is 658560, while the sum is 44.

The spelling of 71447232752 in words is "seventy-one billion, four hundred forty-seven million, two hundred thirty-two thousand, seven hundred fifty-two".