28054686693888 has 160 divisors (see below), whose sum is σ = 83075977797120. Its totient is φ = 9347941048320.

The previous prime is 28054686693883. The next prime is 28054686693899. The reversal of 28054686693888 is 88839668645082.

It is a happy number.

28054686693888 is a `hidden beast` number, since 2 + 8 + 0 + 5 + 468 + 66 + 93 + 8 + 8 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (28054686693883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35426356 + ... + 36209612.

It is an arithmetic number, because the mean of its divisors is an integer number (519224861232).

Almost surely, 2^{28054686693888} 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 28054686693888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41537988898560).

28054686693888 is an abundant number, since it is smaller than the sum of its proper divisors (55021291103232).

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

28054686693888 is an equidigital number, since it uses as much as digits as its factorization.

28054686693888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 785875 (or 785853 counting only the distinct ones).

The product of its (nonzero) digits is 7644119040, while the sum is 81.

The spelling of 28054686693888 in words is "twenty-eight trillion, fifty-four billion, six hundred eighty-six million, six hundred ninety-three thousand, eight hundred eighty-eight".