9811538160097 has 4 divisors (see below), whose sum is σ = 9812028977856. Its totient is φ = 9811047342340.

The previous prime is 9811538160077. The next prime is 9811538160121. The reversal of 9811538160097 is 7900618351189.

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.

It is a cyclic number.

It is not a de Polignac number, because 9811538160097 - 2¹¹ = 9811538158049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9811538160007) 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, 245378893 + ... + 245418874.

It is an arithmetic number, because the mean of its divisors is an integer number (2453007244464).

Almost surely, 2^{9811538160097} is an apocalyptic number.

It is an amenable number.

9811538160097 is a deficient number, since it is larger than the sum of its proper divisors (490817759).

9811538160097 is a wasteful number, since it uses less digits than its factorization.

9811538160097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490817758.

The product of its (nonzero) digits is 3265920, while the sum is 58.

The spelling of 9811538160097 in words is "nine trillion, eight hundred eleven billion, five hundred thirty-eight million, one hundred sixty thousand, ninety-seven".