20335224989 has 2 divisors, whose sum is σ = 20335224990. Its totient is φ = 20335224988.

The previous prime is 20335224979. The next prime is 20335224997. The reversal of 20335224989 is 98942253302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15888602500 + 4446622489 = 126050^2 + 66683^2 .

It is a cyclic number.

It is not a de Polignac number, because 20335224989 - 2³² = 16040257693 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20335224979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10167612494 + 10167612495.

It is an arithmetic number, because the mean of its divisors is an integer number (10167612495).

Almost surely, 2^20335224989 is an apocalyptic number.

It is an amenable number.

20335224989 is a deficient number, since it is larger than the sum of its proper divisors (1).

20335224989 is an equidigital number, since it uses as much as digits as its factorization.

20335224989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 933120, while the sum is 47.

The spelling of 20335224989 in words is "twenty billion, three hundred thirty-five million, two hundred twenty-four thousand, nine hundred eighty-nine".