6463007816 has 8 divisors (see below), whose sum is σ = 12118139670. Its totient is φ = 3231503904.

The previous prime is 6463007807. The next prime is 6463007849. The reversal of 6463007816 is 6187003646.

It can be written as a sum of positive squares in only one way, i.e., 5708406916 + 754600900 = 75554^2 + 27470^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 403937981 + ... + 403937996.

Almost surely, 2^6463007816 is an apocalyptic number.

It is an amenable number.

6463007816 is a deficient number, since it is larger than the sum of its proper divisors (5655131854).

6463007816 is a wasteful number, since it uses less digits than its factorization.

6463007816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 807875983 (or 807875979 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 6463007816 is about 80392.8343572983. The cubic root of 6463007816 is about 1862.7084886258.

The spelling of 6463007816 in words is "six billion, four hundred sixty-three million, seven thousand, eight hundred sixteen".