20427000829 has 2 divisors, whose sum is σ = 20427000830. Its totient is φ = 20427000828.

The previous prime is 20427000821. The next prime is 20427000851. The reversal of 20427000829 is 92800072402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20426983929 + 16900 = 142923^2 + 130^2 .

It is a cyclic number.

It is not a de Polignac number, because 20427000829 - 2³ = 20427000821 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20427000794 and 20427000803.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20427000821) 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, 10213500414 + 10213500415.

It is an arithmetic number, because the mean of its divisors is an integer number (10213500415).

Almost surely, 2^20427000829 is an apocalyptic number.

It is an amenable number.

20427000829 is a deficient number, since it is larger than the sum of its proper divisors (1).

20427000829 is an equidigital number, since it uses as much as digits as its factorization.

20427000829 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 34.

The spelling of 20427000829 in words is "twenty billion, four hundred twenty-seven million, eight hundred twenty-nine", and thus it is an aban number.