20111044404029 has 2 divisors, whose sum is σ = 20111044404030. Its totient is φ = 20111044404028.

The previous prime is 20111044404019. The next prime is 20111044404037. The reversal of 20111044404029 is 92040444011102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10082434831225 + 10028609572804 = 3175285^2 + 3166798^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20111044404029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20111044403986 and 20111044404004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20111044404019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10055522202014 + 10055522202015.

It is an arithmetic number, because the mean of its divisors is an integer number (10055522202015).

Almost surely, 2^{20111044404029} is an apocalyptic number.

It is an amenable number.

20111044404029 is a deficient number, since it is larger than the sum of its proper divisors (1).

20111044404029 is an equidigital number, since it uses as much as digits as its factorization.

20111044404029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9216, while the sum is 32.

The spelling of 20111044404029 in words is "twenty trillion, one hundred eleven billion, forty-four million, four hundred four thousand, twenty-nine".