20417616829 has 2 divisors, whose sum is σ = 20417616830. Its totient is φ = 20417616828.

The previous prime is 20417616827. The next prime is 20417616851. The reversal of 20417616829 is 92861671402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17662941604 + 2754675225 = 132902^2 + 52485^2 .

It is a cyclic number.

It is not a de Polignac number, because 20417616829 - 2¹ = 20417616827 is a prime.

Together with 20417616827, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20417616823) 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, 10208808414 + 10208808415.

It is an arithmetic number, because the mean of its divisors is an integer number (10208808415).

Almost surely, 2^20417616829 is an apocalyptic number.

It is an amenable number.

20417616829 is a deficient number, since it is larger than the sum of its proper divisors (1).

20417616829 is an equidigital number, since it uses as much as digits as its factorization.

20417616829 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 290304, while the sum is 46.

The spelling of 20417616829 in words is "twenty billion, four hundred seventeen million, six hundred sixteen thousand, eight hundred twenty-nine".