71856888608 has 18 divisors (see below), whose sum is σ = 141471234891. Its totient is φ = 35927686112.

The previous prime is 71856888601. The next prime is 71856888611. The reversal of 71856888608 is 80688865817.

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., 35928444304 + 35928444304 = 189548^2 + 189548^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=189548.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71856888601) 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 2 ways as a sum of consecutive naturals, for example, 1492691 + ... + 1540077.

Almost surely, 2^71856888608 is an apocalyptic number.

It is an amenable number.

71856888608 is a deficient number, since it is larger than the sum of its proper divisors (69614346283).

71856888608 is an frugal number, since it uses more digits than its factorization.

71856888608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94784 (or 47389 counting only the distinct ones).

The product of its (nonzero) digits is 41287680, while the sum is 65.

The spelling of 71856888608 in words is "seventy-one billion, eight hundred fifty-six million, eight hundred eighty-eight thousand, six hundred eight".