20710073429609 has 2 divisors, whose sum is σ = 20710073429610. Its totient is φ = 20710073429608.

The previous prime is 20710073429597. The next prime is 20710073429651. The reversal of 20710073429609 is 90692437001702.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17416766755600 + 3293306674009 = 4173340^2 + 1814747^2 .

It is a cyclic number.

It is not a de Polignac number, because 20710073429609 - 2⁴⁰ = 19610561801833 is a prime.

It is not a weakly prime, because it can be changed into another prime (20710073429009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10355036714804 + 10355036714805.

It is an arithmetic number, because the mean of its divisors is an integer number (10355036714805).

Almost surely, 2^{20710073429609} is an apocalyptic number.

It is an amenable number.

20710073429609 is a deficient number, since it is larger than the sum of its proper divisors (1).

20710073429609 is an equidigital number, since it uses as much as digits as its factorization.

20710073429609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1143072, while the sum is 50.

The spelling of 20710073429609 in words is "twenty trillion, seven hundred ten billion, seventy-three million, four hundred twenty-nine thousand, six hundred nine".