86544988065 has 12 divisors (see below), whose sum is σ = 150011312724. Its totient is φ = 46157326944.

The previous prime is 86544988051. The next prime is 86544988069. The reversal of 86544988065 is 56088944568.

86544988065 is a `hidden beast` number, since 8 + 6 + 5 + 4 + 498 + 80 + 65 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 15268803489 + 71276184576 = 123567^2 + 266976^2 .

It is not a de Polignac number, because 86544988065 - 2⁹ = 86544987553 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 86544987993 and 86544988011.

It is not an unprimeable number, because it can be changed into a prime (86544988069) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 961610934 + ... + 961611023.

It is an arithmetic number, because the mean of its divisors is an integer number (12500942727).

Almost surely, 2^86544988065 is an apocalyptic number.

It is an amenable number.

86544988065 is a deficient number, since it is larger than the sum of its proper divisors (63466324659).

86544988065 is a wasteful number, since it uses less digits than its factorization.

86544988065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1923221968 (or 1923221965 counting only the distinct ones).

The product of its (nonzero) digits is 66355200, while the sum is 63.

The spelling of 86544988065 in words is "eighty-six billion, five hundred forty-four million, nine hundred eighty-eight thousand, sixty-five".