20104440281 has 2 divisors, whose sum is σ = 20104440282. Its totient is φ = 20104440280.

The previous prime is 20104440259. The next prime is 20104440401. The reversal of 20104440281 is 18204440102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19781016025 + 323424256 = 140645^2 + 17984^2 .

It is a cyclic number.

It is not a de Polignac number, because 20104440281 - 2¹⁴ = 20104423897 is a prime.

It is a super-2 number, since 2×20104440281² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20104440281.

It is not a weakly prime, because it can be changed into another prime (20104440781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10052220140 + 10052220141.

It is an arithmetic number, because the mean of its divisors is an integer number (10052220141).

Almost surely, 2^20104440281 is an apocalyptic number.

It is an amenable number.

20104440281 is a deficient number, since it is larger than the sum of its proper divisors (1).

20104440281 is an equidigital number, since it uses as much as digits as its factorization.

20104440281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2048, while the sum is 26.

Adding to 20104440281 its reverse (18204440102), we get a palindrome (38308880383).

The spelling of 20104440281 in words is "twenty billion, one hundred four million, four hundred forty thousand, two hundred eighty-one".