20203680929 has 2 divisors, whose sum is σ = 20203680930. Its totient is φ = 20203680928.

The previous prime is 20203680883. The next prime is 20203680967. The reversal of 20203680929 is 92908630202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18544992400 + 1658688529 = 136180^2 + 40727^2 .

It is a cyclic number.

It is not a de Polignac number, because 20203680929 - 2¹² = 20203676833 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (20203680979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10101840464 + 10101840465.

It is an arithmetic number, because the mean of its divisors is an integer number (10101840465).

Almost surely, 2^20203680929 is an apocalyptic number.

It is an amenable number.

20203680929 is a deficient number, since it is larger than the sum of its proper divisors (1).

20203680929 is an equidigital number, since it uses as much as digits as its factorization.

20203680929 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 93312, while the sum is 41.

The spelling of 20203680929 in words is "twenty billion, two hundred three million, six hundred eighty thousand, nine hundred twenty-nine".