20435042011 has 2 divisors, whose sum is σ = 20435042012. Its totient is φ = 20435042010.

The previous prime is 20435041999. The next prime is 20435042027. The reversal of 20435042011 is 11024053402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20435042011 - 2⁷ = 20435041883 is a prime.

It is not a weakly prime, because it can be changed into another prime (20435042081) 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, 10217521005 + 10217521006.

It is an arithmetic number, because the mean of its divisors is an integer number (10217521006).

Almost surely, 2^20435042011 is an apocalyptic number.

20435042011 is a deficient number, since it is larger than the sum of its proper divisors (1).

20435042011 is an equidigital number, since it uses as much as digits as its factorization.

20435042011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 20435042011 its reverse (11024053402), we get a palindrome (31459095413).

The spelling of 20435042011 in words is "twenty billion, four hundred thirty-five million, forty-two thousand, eleven".