20016327281 has 2 divisors, whose sum is σ = 20016327282. Its totient is φ = 20016327280.

The previous prime is 20016327263. The next prime is 20016327299. The reversal of 20016327281 is 18272361002.

It is a balanced prime because it is at equal distance from previous prime (20016327263) and next prime (20016327299).

It can be written as a sum of positive squares in only one way, i.e., 19967103025 + 49224256 = 141305^2 + 7016^2 .

It is a cyclic number.

It is not a de Polignac number, because 20016327281 - 2²⁶ = 19949218417 is a prime.

It is a super-2 number, since 2×20016327281² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20016327211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10008163640 + 10008163641.

It is an arithmetic number, because the mean of its divisors is an integer number (10008163641).

Almost surely, 2^20016327281 is an apocalyptic number.

It is an amenable number.

20016327281 is a deficient number, since it is larger than the sum of its proper divisors (1).

20016327281 is an equidigital number, since it uses as much as digits as its factorization.

20016327281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 32.

Adding to 20016327281 its reverse (18272361002), we get a palindrome (38288688283).

The spelling of 20016327281 in words is "twenty billion, sixteen million, three hundred twenty-seven thousand, two hundred eighty-one".