6421483520 has 52 divisors (see below), whose sum is σ = 15409728300. Its totient is φ = 2568585216.

The previous prime is 6421483513. The next prime is 6421483529. The reversal of 6421483520 is 253841246.

It can be written as a sum of positive squares in 2 ways, for example, as 1888423936 + 4533059584 = 43456^2 + 67328^2 .

It is not an unprimeable number, because it can be changed into a prime (6421483529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136295 + ... + 177254.

Almost surely, 2^6421483520 is an apocalyptic number.

It is an amenable number.

6421483520 is an abundant number, since it is smaller than the sum of its proper divisors (8988244780).

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

6421483520 is an equidigital number, since it uses as much as digits as its factorization.

6421483520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313578 (or 313556 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 35.

The square root of 6421483520 is about 80134.1595076656. The cubic root of 6421483520 is about 1858.7106646270.

The spelling of 6421483520 in words is "six billion, four hundred twenty-one million, four hundred eighty-three thousand, five hundred twenty".