20512630273 has 2 divisors, whose sum is σ = 20512630274. Its totient is φ = 20512630272.

The previous prime is 20512630217. The next prime is 20512630279. The reversal of 20512630273 is 37203621502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20034420849 + 478209424 = 141543^2 + 21868^2 .

It is a cyclic number.

It is not a de Polignac number, because 20512630273 - 2¹⁷ = 20512499201 is a prime.

It is not a weakly prime, because it can be changed into another prime (20512630279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10256315136 + 10256315137.

It is an arithmetic number, because the mean of its divisors is an integer number (10256315137).

Almost surely, 2^20512630273 is an apocalyptic number.

It is an amenable number.

20512630273 is a deficient number, since it is larger than the sum of its proper divisors (1).

20512630273 is an equidigital number, since it uses as much as digits as its factorization.

20512630273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 31.

The spelling of 20512630273 in words is "twenty billion, five hundred twelve million, six hundred thirty thousand, two hundred seventy-three".