20435042027 has 2 divisors, whose sum is σ = 20435042028. Its totient is φ = 20435042026.

The previous prime is 20435042011. The next prime is 20435042053. The reversal of 20435042027 is 72024053402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20435042027 - 2⁴ = 20435042011 is a prime.

It is not a weakly prime, because it can be changed into another prime (20435042057) 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, 10217521013 + 10217521014.

It is an arithmetic number, because the mean of its divisors is an integer number (10217521014).

Almost surely, 2^20435042027 is an apocalyptic number.

20435042027 is a deficient number, since it is larger than the sum of its proper divisors (1).

20435042027 is an equidigital number, since it uses as much as digits as its factorization.

20435042027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13440, while the sum is 29.

Adding to 20435042027 its reverse (72024053402), we get a palindrome (92459095429).

The spelling of 20435042027 in words is "twenty billion, four hundred thirty-five million, forty-two thousand, twenty-seven".