20633913029 has 2 divisors, whose sum is σ = 20633913030. Its totient is φ = 20633913028.

The previous prime is 20633913023. The next prime is 20633913031. The reversal of 20633913029 is 92031933602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17882910529 + 2751002500 = 133727^2 + 52450^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20633913029 is a prime.

Together with 20633913031, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 20633912983 and 20633913001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20633913023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10316956514 + 10316956515.

It is an arithmetic number, because the mean of its divisors is an integer number (10316956515).

Almost surely, 2^20633913029 is an apocalyptic number.

It is an amenable number.

20633913029 is a deficient number, since it is larger than the sum of its proper divisors (1).

20633913029 is an equidigital number, since it uses as much as digits as its factorization.

20633913029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52488, while the sum is 38.

The spelling of 20633913029 in words is "twenty billion, six hundred thirty-three million, nine hundred thirteen thousand, twenty-nine".