86171995609 has 16 divisors (see below), whose sum is σ = 100539705600. Its totient is φ = 72332608320.

The previous prime is 86171995573. The next prime is 86171995697. The reversal of 86171995609 is 90659917168.

It is not a de Polignac number, because 86171995609 - 2¹¹ = 86171993561 is a prime.

It is a super-2 number, since 2×86171995609² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86171995009) 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 15 ways as a sum of consecutive naturals, for example, 507774 + ... + 655879.

It is an arithmetic number, because the mean of its divisors is an integer number (6283731600).

Almost surely, 2^86171995609 is an apocalyptic number.

It is an amenable number.

86171995609 is a deficient number, since it is larger than the sum of its proper divisors (14367709991).

86171995609 is a wasteful number, since it uses less digits than its factorization.

86171995609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1163880.

The product of its (nonzero) digits is 7348320, while the sum is 61.

The spelling of 86171995609 in words is "eighty-six billion, one hundred seventy-one million, nine hundred ninety-five thousand, six hundred nine".