20433896429 has 2 divisors, whose sum is σ = 20433896430. Its totient is φ = 20433896428.

The previous prime is 20433896407. The next prime is 20433896447. The reversal of 20433896429 is 92469833402.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13970058025 + 6463838404 = 118195^2 + 80398^2 .

It is a cyclic number.

It is not a de Polignac number, because 20433896429 - 2⁸ = 20433896173 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 (20433892429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10216948214 + 10216948215.

It is an arithmetic number, because the mean of its divisors is an integer number (10216948215).

Almost surely, 2^20433896429 is an apocalyptic number.

It is an amenable number.

20433896429 is a deficient number, since it is larger than the sum of its proper divisors (1).

20433896429 is an equidigital number, since it uses as much as digits as its factorization.

20433896429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2239488, while the sum is 50.

The spelling of 20433896429 in words is "twenty billion, four hundred thirty-three million, eight hundred ninety-six thousand, four hundred twenty-nine".