71281485688 has 32 divisors (see below), whose sum is σ = 153234084960. Its totient is φ = 30451599360.

The previous prime is 71281485647. The next prime is 71281485719. The reversal of 71281485688 is 88658418217.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2015833 + ... + 2050888.

It is an arithmetic number, because the mean of its divisors is an integer number (4788565155).

Almost surely, 2^71281485688 is an apocalyptic number.

It is an amenable number.

71281485688 is an abundant number, since it is smaller than the sum of its proper divisors (81952599272).

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

71281485688 is a wasteful number, since it uses less digits than its factorization.

71281485688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4067047 (or 4067043 counting only the distinct ones).

The product of its digits is 6881280, while the sum is 58.

The spelling of 71281485688 in words is "seventy-one billion, two hundred eighty-one million, four hundred eighty-five thousand, six hundred eighty-eight".