6556028544 has 320 divisors, whose sum is σ = 21232189440. Its totient is φ = 1996130304.

The previous prime is 6556028539. The next prime is 6556028561. The reversal of 6556028544 is 4458206556.

6556028544 is a `hidden beast` number, since 6 + 5 + 560 + 2 + 85 + 4 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 6556028544.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 17117377 + ... + 17117759.

It is an arithmetic number, because the mean of its divisors is an integer number (66350592).

Almost surely, 2^6556028544 is an apocalyptic number.

6556028544 is a gapful number since it is divisible by the number (64) 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 6556028544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10616094720).

6556028544 is an abundant number, since it is smaller than the sum of its proper divisors (14676160896).

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

6556028544 is a wasteful number, since it uses less digits than its factorization.

6556028544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549 (or 528 counting only the distinct ones).

The product of its (nonzero) digits is 1152000, while the sum is 45.

The square root of 6556028544 is about 80969.3061845043. The cubic root of 6556028544 is about 1871.6024796949.

The spelling of 6556028544 in words is "six billion, five hundred fifty-six million, twenty-eight thousand, five hundred forty-four".