1028547081388 has 6 divisors (see below), whose sum is σ = 1799957392436.
Its totient is φ = 514273540692.
The previous prime is 1028547081329. The next prime is 1028547081391. The reversal of 1028547081388 is 8831807458201.
It is an unprimeable number.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128568385170 + ... + 128568385177.
Almost surely, 21028547081388 is an apocalyptic number.
It is an amenable number.
1028547081388 is a deficient number, since it is larger than the sum of its proper divisors (771410311048).
1028547081388 is a wasteful number, since it uses less digits than its factorization.
1028547081388 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 257136770351 (or 257136770349 counting only the distinct ones).
The product of its (nonzero) digits is 3440640, while the sum is 55.
The spelling of 1028547081388 in words is "one trillion, twenty-eight billion, five hundred forty-seven million, eighty-one thousand, three hundred eighty-eight".