28558103525568 has 168 divisors, whose sum is σ = 84932379871248. Its totient is φ = 9514433166336.

The previous prime is 28558103525561. The next prime is 28558103525569. The reversal of 28558103525568 is 86552530185582.

28558103525568 is a `hidden beast` number, since 2 + 8 + 5 + 5 + 8 + 10 + 3 + 52 + 5 + 568 = 666.

It is not an unprimeable number, because it can be changed into a prime (28558103525561) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29587030 + ... + 30537002.

It is an arithmetic number, because the mean of its divisors is an integer number (505549880186).

Almost surely, 2^{28558103525568} 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 28558103525568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42466189935624).

28558103525568 is an abundant number, since it is smaller than the sum of its proper divisors (56374276345680).

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

28558103525568 is an equidigital number, since it uses as much as digits as its factorization.

28558103525568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 951933 (or 951911 counting only the distinct ones).

The product of its (nonzero) digits is 115200000, while the sum is 63.

It can be divided in two parts, 2855810 and 3525568, that added together give a triangular number (6381378 = T₃₅₇₂).

The spelling of 28558103525568 in words is "twenty-eight trillion, five hundred fifty-eight billion, one hundred three million, five hundred twenty-five thousand, five hundred sixty-eight".