63343216673 has 16 divisors (see below), whose sum is σ = 75143977344. Its totient is φ = 52732604160.

The previous prime is 63343216669. The next prime is 63343216691. The reversal of 63343216673 is 37661234336.

63343216673 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 63343216673 - 2² = 63343216669 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (63343216603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4570565 + ... + 4584402.

It is an arithmetic number, because the mean of its divisors is an integer number (4696498584).

Almost surely, 2^63343216673 is an apocalyptic number.

It is an amenable number.

63343216673 is a deficient number, since it is larger than the sum of its proper divisors (11800760671).

63343216673 is a wasteful number, since it uses less digits than its factorization.

63343216673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9155032.

The product of its digits is 979776, while the sum is 44.

The spelling of 63343216673 in words is "sixty-three billion, three hundred forty-three million, two hundred sixteen thousand, six hundred seventy-three".