6511329984 has 56 divisors (see below), whose sum is σ = 17239658688. Its totient is φ = 2168961280.

The previous prime is 6511329977. The next prime is 6511329989. The reversal of 6511329984 is 4899231156.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (6511329989) 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, 290839 + ... + 312425.

It is an arithmetic number, because the mean of its divisors is an integer number (307851048).

Almost surely, 2^6511329984 is an apocalyptic number.

6511329984 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

6511329984 is an abundant number, since it is smaller than the sum of its proper divisors (10728328704).

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

6511329984 is a wasteful number, since it uses less digits than its factorization.

6511329984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23173 (or 23163 counting only the distinct ones).

The product of its digits is 466560, while the sum is 48.

The square root of 6511329984 is about 80692.8124680259. The cubic root of 6511329984 is about 1867.3392898016.

The spelling of 6511329984 in words is "six billion, five hundred eleven million, three hundred twenty-nine thousand, nine hundred eighty-four".