20502035429 has 2 divisors, whose sum is σ = 20502035430. Its totient is φ = 20502035428.

The previous prime is 20502035387. The next prime is 20502035447. The reversal of 20502035429 is 92453020502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20501944225 + 91204 = 143185^2 + 302^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20502035429 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20502035395 and 20502035404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20502037429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10251017714 + 10251017715.

It is an arithmetic number, because the mean of its divisors is an integer number (10251017715).

Almost surely, 2^20502035429 is an apocalyptic number.

It is an amenable number.

20502035429 is a deficient number, since it is larger than the sum of its proper divisors (1).

20502035429 is an equidigital number, since it uses as much as digits as its factorization.

20502035429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 32.

The spelling of 20502035429 in words is "twenty billion, five hundred two million, thirty-five thousand, four hundred twenty-nine".