86172443169 has 8 divisors (see below), whose sum is σ = 115087768992. Its totient is φ = 57352706400.

The previous prime is 86172443141. The next prime is 86172443173. The reversal of 86172443169 is 96134427168.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 86172443169 - 2¹⁷ = 86172312097 is a prime.

It is a super-2 number, since 2×86172443169² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (86172443969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23895159 + ... + 23898764.

It is an arithmetic number, because the mean of its divisors is an integer number (14385971124).

Almost surely, 2^86172443169 is an apocalyptic number.

It is an amenable number.

86172443169 is a deficient number, since it is larger than the sum of its proper divisors (28915325823).

86172443169 is a wasteful number, since it uses less digits than its factorization.

86172443169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47794527.

The product of its digits is 1741824, while the sum is 51.

The spelling of 86172443169 in words is "eighty-six billion, one hundred seventy-two million, four hundred forty-three thousand, one hundred sixty-nine".