9871351617 has 4 divisors (see below), whose sum is σ = 13161802160. Its totient is φ = 6580901076.

The previous prime is 9871351573. The next prime is 9871351639. The reversal of 9871351617 is 7161531789.

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 an emirpimes, since its reverse is a distinct semiprime: 7161531789 = 3 ⋅2387177263.

It is not a de Polignac number, because 9871351617 - 2⁸ = 9871351361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9871351667) 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, 1645225267 + ... + 1645225272.

It is an arithmetic number, because the mean of its divisors is an integer number (3290450540).

Almost surely, 2^9871351617 is an apocalyptic number.

It is an amenable number.

9871351617 is a deficient number, since it is larger than the sum of its proper divisors (3290450543).

9871351617 is a wasteful number, since it uses less digits than its factorization.

9871351617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3290450542.

The product of its digits is 317520, while the sum is 48.

The square root of 9871351617 is about 99354.6758688286. The cubic root of 9871351617 is about 2145.1559678158.

The spelling of 9871351617 in words is "nine billion, eight hundred seventy-one million, three hundred fifty-one thousand, six hundred seventeen".