20468827229 has 2 divisors, whose sum is σ = 20468827230. Its totient is φ = 20468827228.

The previous prime is 20468827187. The next prime is 20468827231. The reversal of 20468827229 is 92272886402.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20324779225 + 144048004 = 142565^2 + 12002^2 .

It is a cyclic number.

It is not a de Polignac number, because 20468827229 - 2²⁴ = 20452050013 is a prime.

Together with 20468827231, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20468827289) 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, 10234413614 + 10234413615.

It is an arithmetic number, because the mean of its divisors is an integer number (10234413615).

Almost surely, 2^20468827229 is an apocalyptic number.

It is an amenable number.

20468827229 is a deficient number, since it is larger than the sum of its proper divisors (1).

20468827229 is an equidigital number, since it uses as much as digits as its factorization.

20468827229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1548288, while the sum is 50.

The spelling of 20468827229 in words is "twenty billion, four hundred sixty-eight million, eight hundred twenty-seven thousand, two hundred twenty-nine".