9804536071997 has 4 divisors (see below), whose sum is σ = 9804706972860. Its totient is φ = 9804365171136.

The previous prime is 9804536071963. The next prime is 9804536072039. The reversal of 9804536071997 is 7991706354089.

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 7122979169881 + 2681556902116 = 2668891^2 + 1637546^2 .

It is a cyclic number.

It is not a de Polignac number, because 9804536071997 - 2²⁴ = 9804519294781 is a prime.

It is a super-2 number, since 2×9804536071997² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9804536076997) 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, 85364348 + ... + 85479125.

It is an arithmetic number, because the mean of its divisors is an integer number (2451176743215).

Almost surely, 2^{9804536071997} is an apocalyptic number.

It is an amenable number.

9804536071997 is a deficient number, since it is larger than the sum of its proper divisors (170900863).

9804536071997 is a wasteful number, since it uses less digits than its factorization.

9804536071997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170900862.

The product of its (nonzero) digits is 102876480, while the sum is 68.

The spelling of 9804536071997 in words is "nine trillion, eight hundred four billion, five hundred thirty-six million, seventy-one thousand, nine hundred ninety-seven".