6656185180 has 48 divisors (see below), whose sum is σ = 14338003680. Its totient is φ = 2594073600.

The previous prime is 6656185169. The next prime is 6656185201. The reversal of 6656185180 is 815816566.

It is a self number, because there is not a number n which added to its sum of digits gives 6656185180.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 660016 + ... + 670024.

It is an arithmetic number, because the mean of its divisors is an integer number (298708410).

Almost surely, 2^6656185180 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 6656185180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7169001840).

6656185180 is an abundant number, since it is smaller than the sum of its proper divisors (7681818500).

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

6656185180 is a wasteful number, since it uses less digits than its factorization.

6656185180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10870 (or 10868 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 46.

The square root of 6656185180 is about 81585.4471091505. The cubic root of 6656185180 is about 1881.0851947327.

The spelling of 6656185180 in words is "six billion, six hundred fifty-six million, one hundred eighty-five thousand, one hundred eighty".