6645419004463 has 2 divisors, whose sum is σ = 6645419004464. Its totient is φ = 6645419004462.

The previous prime is 6645419004401. The next prime is 6645419004533. The reversal of 6645419004463 is 3644009145466.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6645419004463 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6645419004463.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6645419002463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3322709502231 + 3322709502232.

It is an arithmetic number, because the mean of its divisors is an integer number (3322709502232).

Almost surely, 2^{6645419004463} is an apocalyptic number.

6645419004463 is a deficient number, since it is larger than the sum of its proper divisors (1).

6645419004463 is an equidigital number, since it uses as much as digits as its factorization.

6645419004463 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7464960, while the sum is 52.

The spelling of 6645419004463 in words is "six trillion, six hundred forty-five billion, four hundred nineteen million, four thousand, four hundred sixty-three".