6560533980 has 768 divisors, whose sum is σ = 28043366400. Its totient is φ = 1229230080.

The previous prime is 6560533919. The next prime is 6560534003. The reversal of 6560533980 is 893350656.

6560533980 is a `hidden beast` number, since 6 + 5 + 605 + 3 + 39 + 8 + 0 = 666.

It is a super-2 number, since 2×6560533980² = 86081212205469280800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

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 255 ways as a sum of consecutive naturals, for example, 28648506 + ... + 28648734.

It is an arithmetic number, because the mean of its divisors is an integer number (36514800).

Almost surely, 2^6560533980 is an apocalyptic number.

6560533980 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 6560533980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14021683200).

6560533980 is an abundant number, since it is smaller than the sum of its proper divisors (21482832420).

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

6560533980 is a wasteful number, since it uses less digits than its factorization.

6560533980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331 (or 323 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 45.

The square root of 6560533980 is about 80997.1232822500. The cubic root of 6560533980 is about 1872.0311159358.

The spelling of 6560533980 in words is "six billion, five hundred sixty million, five hundred thirty-three thousand, nine hundred eighty".