11161200171571 has 32 divisors (see below), whose sum is σ = 12372069496320. Its totient is φ = 10014947390976.

The previous prime is 11161200171533. The next prime is 11161200171593. The reversal of 11161200171571 is 17517100216111.

It is a cyclic number.

It is not a de Polignac number, because 11161200171571 - 2⁹ = 11161200171059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11161200871571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 367262445 + ... + 367292833.

It is an arithmetic number, because the mean of its divisors is an integer number (386627171760).

Almost surely, 2^{11161200171571} is an apocalyptic number.

11161200171571 is a deficient number, since it is larger than the sum of its proper divisors (1210869324749).

11161200171571 is a wasteful number, since it uses less digits than its factorization.

11161200171571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33483.

The product of its (nonzero) digits is 2940, while the sum is 34.

Adding to 11161200171571 its reverse (17517100216111), we get a palindrome (28678300387682).

The spelling of 11161200171571 in words is "eleven trillion, one hundred sixty-one billion, two hundred million, one hundred seventy-one thousand, five hundred seventy-one".