20484026280089 has 2 divisors, whose sum is σ = 20484026280090. Its totient is φ = 20484026280088.

The previous prime is 20484026280019. The next prime is 20484026280119. The reversal of 20484026280089 is 98008262048402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10281802575625 + 10202223704464 = 3206525^2 + 3194092^2 .

It is a cyclic number.

It is not a de Polignac number, because 20484026280089 - 2²⁸ = 20483757844633 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20484026280089.

It is not a weakly prime, because it can be changed into another prime (20484026280019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10242013140044 + 10242013140045.

It is an arithmetic number, because the mean of its divisors is an integer number (10242013140045).

Almost surely, 2^{20484026280089} is an apocalyptic number.

It is an amenable number.

20484026280089 is a deficient number, since it is larger than the sum of its proper divisors (1).

20484026280089 is an equidigital number, since it uses as much as digits as its factorization.

20484026280089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3538944, while the sum is 53.

The spelling of 20484026280089 in words is "twenty trillion, four hundred eighty-four billion, twenty-six million, two hundred eighty thousand, eighty-nine".