6563443478 has 8 divisors (see below), whose sum is σ = 9900166680. Its totient is φ = 3263387920.

The previous prime is 6563443459. The next prime is 6563443499. The reversal of 6563443478 is 8743443656.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9166463 + ... + 9167178.

It is an arithmetic number, because the mean of its divisors is an integer number (1237520835).

Almost surely, 2^6563443478 is an apocalyptic number.

6563443478 is a deficient number, since it is larger than the sum of its proper divisors (3336723202).

6563443478 is a wasteful number, since it uses less digits than its factorization.

6563443478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18333822.

The product of its digits is 5806080, while the sum is 50.

The square root of 6563443478 is about 81015.0817934537. The cubic root of 6563443478 is about 1872.3078142366.

The spelling of 6563443478 in words is "six billion, five hundred sixty-three million, four hundred forty-three thousand, four hundred seventy-eight".