28559063938878 has 192 divisors, whose sum is σ = 73272464179200. Its totient is φ = 7946421122880.

The previous prime is 28559063938819. The next prime is 28559063938879. The reversal of 28559063938878 is 87883936095582.

28559063938878 is a `hidden beast` number, since 2 + 8 + 55 + 90 + 6 + 39 + 388 + 78 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 28559063938797 and 28559063938806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28559063938879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 17427763 + ... + 18995921.

It is an arithmetic number, because the mean of its divisors is an integer number (381627417600).

Almost surely, 2^{28559063938878} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28559063938878, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36636232089600).

28559063938878 is an abundant number, since it is smaller than the sum of its proper divisors (44713400240322).

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

28559063938878 is a wasteful number, since it uses less digits than its factorization.

28559063938878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1568347 (or 1568344 counting only the distinct ones).

The product of its (nonzero) digits is 6270566400, while the sum is 81.

The spelling of 28559063938878 in words is "twenty-eight trillion, five hundred fifty-nine billion, sixty-three million, nine hundred thirty-eight thousand, eight hundred seventy-eight".