6609444156 has 120 divisors (see below), whose sum is σ = 20383942656. Its totient is φ = 1827476640.

The previous prime is 6609444119. The next prime is 6609444157. The reversal of 6609444156 is 6514449066.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6609444157) by changing a digit.

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 39 ways as a sum of consecutive naturals, for example, 23305 + ... + 117311.

Almost surely, 2^6609444156 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6609444156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10191971328).

6609444156 is an abundant number, since it is smaller than the sum of its proper divisors (13774498500).

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

6609444156 is a wasteful number, since it uses less digits than its factorization.

6609444156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94061 (or 94050 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The square root of 6609444156 is about 81298.4880302211. The cubic root of 6609444156 is about 1876.6717327355.

The spelling of 6609444156 in words is "six billion, six hundred nine million, four hundred forty-four thousand, one hundred fifty-six".