6480331640 has 32 divisors (see below), whose sum is σ = 14622083280. Its totient is φ = 2584783872.

The previous prime is 6480331639. The next prime is 6480331651. The reversal of 6480331640 is 461330846.

It is a self number, because there is not a number n which added to its sum of digits gives 6480331640.

It is a congruent number.

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, 215354 + ... + 243593.

Almost surely, 2^6480331640 is an apocalyptic number.

It is an amenable number.

6480331640 is an abundant number, since it is smaller than the sum of its proper divisors (8141751640).

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

6480331640 is a wasteful number, since it uses less digits than its factorization.

6480331640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459311 (or 459307 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 35.

The square root of 6480331640 is about 80500.5070791483. The cubic root of 6480331640 is about 1864.3713080479.

The spelling of 6480331640 in words is "six billion, four hundred eighty million, three hundred thirty-one thousand, six hundred forty".