6504000000 has 280 divisors, whose sum is σ = 21738471744. Its totient is φ = 1728000000.

The previous prime is 6503999989. The next prime is 6504000017. The reversal of 6504000000 is 4056.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 23999865 + ... + 24000135.

Almost surely, 2^6504000000 is an apocalyptic number.

6504000000 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6504000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10869235872).

6504000000 is an abundant number, since it is smaller than the sum of its proper divisors (15234471744).

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

6504000000 is an frugal number, since it uses more digits than its factorization.

6504000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322 (or 281 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 6504000000 is about 80647.3806146238. The cubic root of 6504000000 is about 1866.6383215651.

Adding to 6504000000 its reverse (4056), we get a palindrome (6504004056).

The spelling of 6504000000 in words is "six billion, five hundred four million", and thus it is an aban number.