20104000043 has 2 divisors, whose sum is σ = 20104000044. Its totient is φ = 20104000042.

The previous prime is 20104000039. The next prime is 20104000093. The reversal of 20104000043 is 34000040102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20104000043 - 2² = 20104000039 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 20103999991 and 20104000027.

It is not a weakly prime, because it can be changed into another prime (20104000093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10052000021 + 10052000022.

It is an arithmetic number, because the mean of its divisors is an integer number (10052000022).

Almost surely, 2^20104000043 is an apocalyptic number.

20104000043 is a deficient number, since it is larger than the sum of its proper divisors (1).

20104000043 is an equidigital number, since it uses as much as digits as its factorization.

20104000043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 14.

Adding to 20104000043 its reverse (34000040102), we get a palindrome (54104040145).

The spelling of 20104000043 in words is "twenty billion, one hundred four million, forty-three", and thus it is an aban number.