20116160116571 has 4 divisors (see below), whose sum is σ = 20249379720144. Its totient is φ = 19982940513000.

The previous prime is 20116160116561. The next prime is 20116160116579. The reversal of 20116160116571 is 17561106161102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20116160116571 - 2¹⁴ = 20116160100187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20116160116579) 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, 66609801560 + ... + 66609801861.

It is an arithmetic number, because the mean of its divisors is an integer number (5062344930036).

Almost surely, 2^{20116160116571} is an apocalyptic number.

20116160116571 is a deficient number, since it is larger than the sum of its proper divisors (133219603573).

20116160116571 is a wasteful number, since it uses less digits than its factorization.

20116160116571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133219603572.

The product of its (nonzero) digits is 15120, while the sum is 38.

Adding to 20116160116571 its reverse (17561106161102), we get a palindrome (37677266277673).

The spelling of 20116160116571 in words is "twenty trillion, one hundred sixteen billion, one hundred sixty million, one hundred sixteen thousand, five hundred seventy-one".