634008820243 has 2 divisors, whose sum is σ = 634008820244. Its totient is φ = 634008820242.

The previous prime is 634008820241. The next prime is 634008820303. The reversal of 634008820243 is 342028800436.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 634008820243 - 2¹ = 634008820241 is a prime.

Together with 634008820241, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 634008820196 and 634008820205.

It is not a weakly prime, because it can be changed into another prime (634008820241) 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, 317004410121 + 317004410122.

It is an arithmetic number, because the mean of its divisors is an integer number (317004410122).

Almost surely, 2^634008820243 is an apocalyptic number.

634008820243 is a deficient number, since it is larger than the sum of its proper divisors (1).

634008820243 is an equidigital number, since it uses as much as digits as its factorization.

634008820243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 221184, while the sum is 40.

The spelling of 634008820243 in words is "six hundred thirty-four billion, eight million, eight hundred twenty thousand, two hundred forty-three".