20343303847 has 2 divisors, whose sum is σ = 20343303848. Its totient is φ = 20343303846.

The previous prime is 20343303829. The next prime is 20343303887. The reversal of 20343303847 is 74830334302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20343303847 - 2¹⁵ = 20343271079 is a prime.

It is a super-2 number, since 2×20343303847² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20343303887) 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, 10171651923 + 10171651924.

It is an arithmetic number, because the mean of its divisors is an integer number (10171651924).

Almost surely, 2^20343303847 is an apocalyptic number.

20343303847 is a deficient number, since it is larger than the sum of its proper divisors (1).

20343303847 is an equidigital number, since it uses as much as digits as its factorization.

20343303847 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 37.

The spelling of 20343303847 in words is "twenty billion, three hundred forty-three million, three hundred three thousand, eight hundred forty-seven".