20798353733 has 2 divisors, whose sum is σ = 20798353734. Its totient is φ = 20798353732.

The previous prime is 20798353711. The next prime is 20798353799. The reversal of 20798353733 is 33735389702.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15138349444 + 5660004289 = 123038^2 + 75233^2 .

It is a cyclic number.

It is not a de Polignac number, because 20798353733 - 2⁶ = 20798353669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20798350733) 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, 10399176866 + 10399176867.

It is an arithmetic number, because the mean of its divisors is an integer number (10399176867).

Almost surely, 2^20798353733 is an apocalyptic number.

It is an amenable number.

20798353733 is a deficient number, since it is larger than the sum of its proper divisors (1).

20798353733 is an equidigital number, since it uses as much as digits as its factorization.

20798353733 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2857680, while the sum is 50.

The spelling of 20798353733 in words is "twenty billion, seven hundred ninety-eight million, three hundred fifty-three thousand, seven hundred thirty-three".