20161327441771 has 2 divisors, whose sum is σ = 20161327441772. Its totient is φ = 20161327441770.

The previous prime is 20161327441687. The next prime is 20161327441789. The reversal of 20161327441771 is 17714472316102.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20161327441771 - 2²⁷ = 20161193224043 is a prime.

It is not a weakly prime, because it can be changed into another prime (20161327421771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10080663720885 + 10080663720886.

It is an arithmetic number, because the mean of its divisors is an integer number (10080663720886).

Almost surely, 2^{20161327441771} is an apocalyptic number.

20161327441771 is a deficient number, since it is larger than the sum of its proper divisors (1).

20161327441771 is an equidigital number, since it uses as much as digits as its factorization.

20161327441771 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 395136, while the sum is 46.

Adding to 20161327441771 its reverse (17714472316102), we get a palindrome (37875799757873).

The spelling of 20161327441771 in words is "twenty trillion, one hundred sixty-one billion, three hundred twenty-seven million, four hundred forty-one thousand, seven hundred seventy-one".