20135326163 has 2 divisors, whose sum is σ = 20135326164. Its totient is φ = 20135326162.

The previous prime is 20135326087. The next prime is 20135326217. The reversal of 20135326163 is 36162353102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20135326163 - 2³² = 15840358867 is a prime.

It is not a weakly prime, because it can be changed into another prime (20135326763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10067663081 + 10067663082.

It is an arithmetic number, because the mean of its divisors is an integer number (10067663082).

Almost surely, 2^20135326163 is an apocalyptic number.

20135326163 is a deficient number, since it is larger than the sum of its proper divisors (1).

20135326163 is an equidigital number, since it uses as much as digits as its factorization.

20135326163 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 32.

Adding to 20135326163 its reverse (36162353102), we get a palindrome (56297679265).

The spelling of 20135326163 in words is "twenty billion, one hundred thirty-five million, three hundred twenty-six thousand, one hundred sixty-three".