20430332929 has 2 divisors, whose sum is σ = 20430332930. Its totient is φ = 20430332928.

The previous prime is 20430332927. The next prime is 20430332983. The reversal of 20430332929 is 92923303402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18400379904 + 2029953025 = 135648^2 + 45055^2 .

It is a cyclic number.

It is not a de Polignac number, because 20430332929 - 2¹ = 20430332927 is a prime.

Together with 20430332927, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20430332921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10215166464 + 10215166465.

It is an arithmetic number, because the mean of its divisors is an integer number (10215166465).

Almost surely, 2^20430332929 is an apocalyptic number.

It is an amenable number.

20430332929 is a deficient number, since it is larger than the sum of its proper divisors (1).

20430332929 is an equidigital number, since it uses as much as digits as its factorization.

20430332929 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69984, while the sum is 37.

The spelling of 20430332929 in words is "twenty billion, four hundred thirty million, three hundred thirty-two thousand, nine hundred twenty-nine".