20135842033 has 2 divisors, whose sum is σ = 20135842034. Its totient is φ = 20135842032.

The previous prime is 20135842019. The next prime is 20135842043. The reversal of 20135842033 is 33024853102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11069564944 + 9066277089 = 105212^2 + 95217^2 .

It is a cyclic number.

It is not a de Polignac number, because 20135842033 - 2²¹ = 20133744881 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20135841986 and 20135842004.

It is not a weakly prime, because it can be changed into another prime (20135842003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10067921016 + 10067921017.

It is an arithmetic number, because the mean of its divisors is an integer number (10067921017).

Almost surely, 2^20135842033 is an apocalyptic number.

It is an amenable number.

20135842033 is a deficient number, since it is larger than the sum of its proper divisors (1).

20135842033 is an equidigital number, since it uses as much as digits as its factorization.

20135842033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 31.

The spelling of 20135842033 in words is "twenty billion, one hundred thirty-five million, eight hundred forty-two thousand, thirty-three".