6546943405663 has 2 divisors, whose sum is σ = 6546943405664. Its totient is φ = 6546943405662.

The previous prime is 6546943405649. The next prime is 6546943405859. The reversal of 6546943405663 is 3665043496456.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6546943405663 - 2⁹ = 6546943405151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6546943405603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3273471702831 + 3273471702832.

It is an arithmetic number, because the mean of its divisors is an integer number (3273471702832).

Almost surely, 2^{6546943405663} is an apocalyptic number.

6546943405663 is a deficient number, since it is larger than the sum of its proper divisors (1).

6546943405663 is an equidigital number, since it uses as much as digits as its factorization.

6546943405663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 167961600, while the sum is 61.

The spelling of 6546943405663 in words is "six trillion, five hundred forty-six billion, nine hundred forty-three million, four hundred five thousand, six hundred sixty-three".