20004356634137 has 2 divisors, whose sum is σ = 20004356634138. Its totient is φ = 20004356634136.

The previous prime is 20004356634113. The next prime is 20004356634167. The reversal of 20004356634137 is 73143665340002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12204758847961 + 7799597786176 = 3493531^2 + 2792776^2 .

It is a cyclic number.

It is not a de Polignac number, because 20004356634137 - 2²² = 20004352439833 is a prime.

It is not a weakly prime, because it can be changed into another prime (20004356634167) 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, 10002178317068 + 10002178317069.

It is an arithmetic number, because the mean of its divisors is an integer number (10002178317069).

Almost surely, 2^{20004356634137} is an apocalyptic number.

It is an amenable number.

20004356634137 is a deficient number, since it is larger than the sum of its proper divisors (1).

20004356634137 is an equidigital number, since it uses as much as digits as its factorization.

20004356634137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1088640, while the sum is 44.

The spelling of 20004356634137 in words is "twenty trillion, four billion, three hundred fifty-six million, six hundred thirty-four thousand, one hundred thirty-seven".