20475730159 has 2 divisors, whose sum is σ = 20475730160. Its totient is φ = 20475730158.

The previous prime is 20475730157. The next prime is 20475730193. The reversal of 20475730159 is 95103757402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20475730159 - 2¹ = 20475730157 is a prime.

Together with 20475730157, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20475730157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10237865079 + 10237865080.

It is an arithmetic number, because the mean of its divisors is an integer number (10237865080).

Almost surely, 2^20475730159 is an apocalyptic number.

20475730159 is a deficient number, since it is larger than the sum of its proper divisors (1).

20475730159 is an equidigital number, since it uses as much as digits as its factorization.

20475730159 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 264600, while the sum is 43.

The spelling of 20475730159 in words is "twenty billion, four hundred seventy-five million, seven hundred thirty thousand, one hundred fifty-nine".