6484438780 has 24 divisors (see below), whose sum is σ = 13630322160. Its totient is φ = 2591299200.

The previous prime is 6484438757. The next prime is 6484438781. The reversal of 6484438780 is 878344846.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6484438781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133225 + ... + 175264.

It is an arithmetic number, because the mean of its divisors is an integer number (567930090).

Almost surely, 2^6484438780 is an apocalyptic number.

It is an amenable number.

6484438780 is an abundant number, since it is smaller than the sum of its proper divisors (7145883380).

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

6484438780 is a wasteful number, since it uses less digits than its factorization.

6484438780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309549 (or 309547 counting only the distinct ones).

The product of its (nonzero) digits is 4128768, while the sum is 52.

The square root of 6484438780 is about 80526.0130641025. The cubic root of 6484438780 is about 1864.7650953460.

The spelling of 6484438780 in words is "six billion, four hundred eighty-four million, four hundred thirty-eight thousand, seven hundred eighty".