6561180000 has 180 divisors, whose sum is σ = 23316120828. Its totient is φ = 1749600000.

The previous prime is 6561179987. The next prime is 6561180011. The reversal of 6561180000 is 811656.

6561180000 is a `hidden beast` number, since 656 + 1 + 1 + 8 + 0 + 0 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (180).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 161775 + ... + 198225.

Almost surely, 2^6561180000 is an apocalyptic number.

6561180000 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 6561180000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11658060414).

6561180000 is an abundant number, since it is smaller than the sum of its proper divisors (16754940828).

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

6561180000 is a wasteful number, since it uses less digits than its factorization.

6561180000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36487 (or 36461 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 6561180000 is about 81001.1111034904. Note that the first 4 decimals coincide. The cubic root of 6561180000 is about 1872.0925606216.

Adding to 6561180000 its reverse (811656), we get a palindrome (6561991656).

The spelling of 6561180000 in words is "six billion, five hundred sixty-one million, one hundred eighty thousand".