20350320247 has 2 divisors, whose sum is σ = 20350320248. Its totient is φ = 20350320246.

The previous prime is 20350320181. The next prime is 20350320251. The reversal of 20350320247 is 74202305302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20350320247 - 2⁷ = 20350320119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20350320547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10175160123 + 10175160124.

It is an arithmetic number, because the mean of its divisors is an integer number (10175160124).

Almost surely, 2^20350320247 is an apocalyptic number.

20350320247 is a deficient number, since it is larger than the sum of its proper divisors (1).

20350320247 is an equidigital number, since it uses as much as digits as its factorization.

20350320247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 28.

Adding to 20350320247 its reverse (74202305302), we get a palindrome (94552625549).

The spelling of 20350320247 in words is "twenty billion, three hundred fifty million, three hundred twenty thousand, two hundred forty-seven".