2171086418593 has 4 divisors (see below), whose sum is σ = 2245951467540. Its totient is φ = 2096221369648.

The previous prime is 2171086418563. The next prime is 2171086418713. The reversal of 2171086418593 is 3958146801712.

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 342825473169 + 1828260945424 = 585513^2 + 1352132^2 .

It is a cyclic number.

It is not a de Polignac number, because 2171086418593 - 2¹³ = 2171086410401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2171086418513) 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, 37432524430 + ... + 37432524487.

It is an arithmetic number, because the mean of its divisors is an integer number (561487866885).

It is a 1-persistent number, because it is pandigital, but 2⋅2171086418593 = 4342172837186 is not.

Almost surely, 2^{2171086418593} is an apocalyptic number.

It is an amenable number.

2171086418593 is a deficient number, since it is larger than the sum of its proper divisors (74865048947).

2171086418593 is an equidigital number, since it uses as much as digits as its factorization.

2171086418593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74865048946.

The product of its (nonzero) digits is 2903040, while the sum is 55.

The spelling of 2171086418593 in words is "two trillion, one hundred seventy-one billion, eighty-six million, four hundred eighteen thousand, five hundred ninety-three".