6620240528856 has 192 divisors, whose sum is σ = 18124668525600. Its totient is φ = 2182899456000.

The previous prime is 6620240528851. The next prime is 6620240528873. The reversal of 6620240528856 is 6588250420266.

6620240528856 is a `hidden beast` number, since 6 + 6 + 20 + 2 + 40 + 528 + 8 + 56 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6620240528851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4793801286 + ... + 4793802666.

Almost surely, 2^{6620240528856} 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 6620240528856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9062334262800).

6620240528856 is an abundant number, since it is smaller than the sum of its proper divisors (11504427996744).

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

6620240528856 is a wasteful number, since it uses less digits than its factorization.

6620240528856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2930 (or 2923 counting only the distinct ones).

The product of its (nonzero) digits is 11059200, while the sum is 54.

The spelling of 6620240528856 in words is "six trillion, six hundred twenty billion, two hundred forty million, five hundred twenty-eight thousand, eight hundred fifty-six".