20620065101 has 2 divisors, whose sum is σ = 20620065102. Its totient is φ = 20620065100.

The previous prime is 20620065023. The next prime is 20620065131. The reversal of 20620065101 is 10156002602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15196479076 + 5423586025 = 123274^2 + 73645^2 .

It is a cyclic number.

It is not a de Polignac number, because 20620065101 - 2¹⁰ = 20620064077 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20620065131) 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, 10310032550 + 10310032551.

It is an arithmetic number, because the mean of its divisors is an integer number (10310032551).

Almost surely, 2^20620065101 is an apocalyptic number.

It is an amenable number.

20620065101 is a deficient number, since it is larger than the sum of its proper divisors (1).

20620065101 is an equidigital number, since it uses as much as digits as its factorization.

20620065101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 20620065101 its reverse (10156002602), we get a palindrome (30776067703).

The spelling of 20620065101 in words is "twenty billion, six hundred twenty million, sixty-five thousand, one hundred one".