20620240307 has 2 divisors, whose sum is σ = 20620240308. Its totient is φ = 20620240306.

The previous prime is 20620240279. The next prime is 20620240349. The reversal of 20620240307 is 70304202602.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20620240307 is a prime.

It is not a weakly prime, because it can be changed into another prime (20620240357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10310120153 + 10310120154.

It is an arithmetic number, because the mean of its divisors is an integer number (10310120154).

Almost surely, 2^20620240307 is an apocalyptic number.

20620240307 is a deficient number, since it is larger than the sum of its proper divisors (1).

20620240307 is an equidigital number, since it uses as much as digits as its factorization.

20620240307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 26.

Adding to 20620240307 its reverse (70304202602), we get a palindrome (90924442909).

The spelling of 20620240307 in words is "twenty billion, six hundred twenty million, two hundred forty thousand, three hundred seven".