6609129000 has 128 divisors (see below), whose sum is σ = 21331814400. Its totient is φ = 1701638400.

The previous prime is 6609128987. The next prime is 6609129013. The reversal of 6609129000 is 9219066.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6609128987) and next prime (6609129013).

It is a super-2 number, since 2×6609129000² = 87361172277282000000, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49017 + ... + 124983.

It is an arithmetic number, because the mean of its divisors is an integer number (166654800).

Almost surely, 2^6609129000 is an apocalyptic number.

6609129000 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 6609129000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10665907200).

6609129000 is an abundant number, since it is smaller than the sum of its proper divisors (14722685400).

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

6609129000 is a wasteful number, since it uses less digits than its factorization.

6609129000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76020 (or 76006 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 6609129000 is about 81296.5497422861. The cubic root of 6609129000 is about 1876.6419040165.

The spelling of 6609129000 in words is "six billion, six hundred nine million, one hundred twenty-nine thousand".