71017759688 has 12 divisors (see below), whose sum is σ = 133159712715. Its totient is φ = 35508502968.

The previous prime is 71017759649. The next prime is 71017759691. The reversal of 71017759688 is 88695771017.

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 can be written as a sum of positive squares in only one way, i.e., 35508879844 + 35508879844 = 188438^2 + 188438^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=188438.

It is a super-2 number, since 2×71017759688² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 706643 + ... + 800861.

Almost surely, 2^71017759688 is an apocalyptic number.

It is an amenable number.

71017759688 is a deficient number, since it is larger than the sum of its proper divisors (62141953027).

71017759688 is an frugal number, since it uses more digits than its factorization.

71017759688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188444 (or 94221 counting only the distinct ones).

The product of its (nonzero) digits is 5927040, while the sum is 59.

The spelling of 71017759688 in words is "seventy-one billion, seventeen million, seven hundred fifty-nine thousand, six hundred eighty-eight".