20584263229 has 2 divisors, whose sum is σ = 20584263230. Its totient is φ = 20584263228.

The previous prime is 20584263211. The next prime is 20584263239. The reversal of 20584263229 is 92236248502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10881619225 + 9702644004 = 104315^2 + 98502^2 .

It is a cyclic number.

It is not a de Polignac number, because 20584263229 - 2⁵ = 20584263197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20584263239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10292131614 + 10292131615.

It is an arithmetic number, because the mean of its divisors is an integer number (10292131615).

Almost surely, 2^20584263229 is an apocalyptic number.

It is an amenable number.

20584263229 is a deficient number, since it is larger than the sum of its proper divisors (1).

20584263229 is an equidigital number, since it uses as much as digits as its factorization.

20584263229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 414720, while the sum is 43.

The spelling of 20584263229 in words is "twenty billion, five hundred eighty-four million, two hundred sixty-three thousand, two hundred twenty-nine".