It is an unprimeable number.
Almost surely, 228027561311906 is an apocalyptic number.
28027561311906 is a gapful number since it is divisible by the number (26) formed by its first and last digit.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
28027561311906 is a wasteful number, since it uses less digits than its factorization.
28027561311906 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 67207106.
Adding to 28027561311906 its reverse (60911316572082), we get a palindrome (88938877883988).
The spelling of 28027561311906 in words is "twenty-eight trillion, twenty-seven billion, five hundred sixty-one million, three hundred eleven thousand, nine hundred six".