86594425817 has 4 divisors (see below), whose sum is σ = 86659979316. Its totient is φ = 86528872320.

The previous prime is 86594425789. The next prime is 86594425919. The reversal of 86594425817 is 71852449568.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 64505332441 + 22089093376 = 253979^2 + 148624^2 .

It is a cyclic number.

It is not a de Polignac number, because 86594425817 - 2³⁴ = 69414556633 is a prime.

It is a super-5 number, since 5×86594425817⁵ (a number of 56 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86594425117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32774768 + ... + 32777409.

It is an arithmetic number, because the mean of its divisors is an integer number (21664994829).

Almost surely, 2^86594425817 is an apocalyptic number.

It is an amenable number.

86594425817 is a deficient number, since it is larger than the sum of its proper divisors (65553499).

86594425817 is a wasteful number, since it uses less digits than its factorization.

86594425817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65553498.

The product of its digits is 19353600, while the sum is 59.

The spelling of 86594425817 in words is "eighty-six billion, five hundred ninety-four million, four hundred twenty-five thousand, eight hundred seventeen".