86643531534125 has 16 divisors (see below), whose sum is σ = 108138570007728. Its totient is φ = 69310054296000.

The previous prime is 86643531534059. The next prime is 86643531534181. The reversal of 86643531534125 is 52143513534668.

It can be written as a sum of positive squares in 8 ways, for example, as 10504975535044 + 76138555999081 = 3241138^2 + 8725741^2 .

It is not a de Polignac number, because 86643531534125 - 2¹⁸ = 86643531271981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22030766 + ... + 25664015.

It is an arithmetic number, because the mean of its divisors is an integer number (6758660625483).

Almost surely, 2^{86643531534125} is an apocalyptic number.

It is an amenable number.

86643531534125 is a deficient number, since it is larger than the sum of its proper divisors (21495038473603).

86643531534125 is a wasteful number, since it uses less digits than its factorization.

86643531534125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47709329 (or 47709319 counting only the distinct ones).

The product of its digits is 31104000, while the sum is 56.

The spelling of 86643531534125 in words is "eighty-six trillion, six hundred forty-three billion, five hundred thirty-one million, five hundred thirty-four thousand, one hundred twenty-five".