6463438480 has 40 divisors (see below), whose sum is σ = 15031397304. Its totient is φ = 2584704000.

The previous prime is 6463438451. The next prime is 6463438517. The reversal of 6463438480 is 848343646.

It can be written as a sum of positive squares in 4 ways, for example, as 1334587024 + 5128851456 = 36532^2 + 71616^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 6463438480.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 398530 + ... + 414430.

Almost surely, 2^6463438480 is an apocalyptic number.

It is an amenable number.

6463438480 is an abundant number, since it is smaller than the sum of its proper divisors (8567958824).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6463438480 is a wasteful number, since it uses less digits than its factorization.

6463438480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20995 (or 20989 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 46.

The square root of 6463438480 is about 80395.5128101065. The cubic root of 6463438480 is about 1862.7498617085.

The spelling of 6463438480 in words is "six billion, four hundred sixty-three million, four hundred thirty-eight thousand, four hundred eighty".