20550000349 has 2 divisors, whose sum is σ = 20550000350. Its totient is φ = 20550000348.

The previous prime is 20550000307. The next prime is 20550000353. The reversal of 20550000349 is 94300005502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13253765625 + 7296234724 = 115125^2 + 85418^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20550000349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20550000749) 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, 10275000174 + 10275000175.

It is an arithmetic number, because the mean of its divisors is an integer number (10275000175).

Almost surely, 2^20550000349 is an apocalyptic number.

It is an amenable number.

20550000349 is a deficient number, since it is larger than the sum of its proper divisors (1).

20550000349 is an equidigital number, since it uses as much as digits as its factorization.

20550000349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5400, while the sum is 28.

The spelling of 20550000349 in words is "twenty billion, five hundred fifty million, three hundred forty-nine", and thus it is an aban number.