646063043603 has 2 divisors, whose sum is σ = 646063043604. Its totient is φ = 646063043602.

The previous prime is 646063043573. The next prime is 646063043677. The reversal of 646063043603 is 306340360646.

It is a happy number.

646063043603 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-646063043603 is a prime.

It is not a weakly prime, because it can be changed into another prime (646063043203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 323031521801 + 323031521802.

It is an arithmetic number, because the mean of its divisors is an integer number (323031521802).

Almost surely, 2^646063043603 is an apocalyptic number.

646063043603 is a deficient number, since it is larger than the sum of its proper divisors (1).

646063043603 is an equidigital number, since it uses as much as digits as its factorization.

646063043603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 559872, while the sum is 41.

The spelling of 646063043603 in words is "six hundred forty-six billion, sixty-three million, forty-three thousand, six hundred three".