86436586573 has 4 divisors (see below), whose sum is σ = 86437482048. Its totient is φ = 86435691100.

The previous prime is 86436586567. The next prime is 86436586601. The reversal of 86436586573 is 37568563468.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86436586573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86436586273) 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, 282661 + ... + 502762.

It is an arithmetic number, because the mean of its divisors is an integer number (21609370512).

Almost surely, 2^86436586573 is an apocalyptic number.

It is an amenable number.

86436586573 is a deficient number, since it is larger than the sum of its proper divisors (895475).

86436586573 is a wasteful number, since it uses less digits than its factorization.

86436586573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 895474.

The product of its digits is 87091200, while the sum is 61.

The spelling of 86436586573 in words is "eighty-six billion, four hundred thirty-six million, five hundred eighty-six thousand, five hundred seventy-three".