20044513187117 has 2 divisors, whose sum is σ = 20044513187118. Its totient is φ = 20044513187116.

The previous prime is 20044513187053. The next prime is 20044513187269. The reversal of 20044513187117 is 71178131544002.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19737352270276 + 307160916841 = 4442674^2 + 554221^2 .

It is a cyclic number.

It is not a de Polignac number, because 20044513187117 - 2⁶ = 20044513187053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20044513087117) 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, 10022256593558 + 10022256593559.

It is an arithmetic number, because the mean of its divisors is an integer number (10022256593559).

Almost surely, 2^{20044513187117} is an apocalyptic number.

It is an amenable number.

20044513187117 is a deficient number, since it is larger than the sum of its proper divisors (1).

20044513187117 is an equidigital number, since it uses as much as digits as its factorization.

20044513187117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 188160, while the sum is 44.

The spelling of 20044513187117 in words is "twenty trillion, forty-four billion, five hundred thirteen million, one hundred eighty-seven thousand, one hundred seventeen".