1028916513128 has 32 divisors (see below), whose sum is σ = 2214533995200. Its totient is φ = 439021640832.

The previous prime is 1028916513103. The next prime is 1028916513137. The reversal of 1028916513128 is 8213156198201.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40457573 + ... + 40482996.

It is an arithmetic number, because the mean of its divisors is an integer number (69204187350).

Almost surely, 2^{1028916513128} is an apocalyptic number.

It is an amenable number.

1028916513128 is an abundant number, since it is smaller than the sum of its proper divisors (1185617482072).

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

1028916513128 is a wasteful number, since it uses less digits than its factorization.

1028916513128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80940809 (or 80940805 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 47.

The spelling of 1028916513128 in words is "one trillion, twenty-eight billion, nine hundred sixteen million, five hundred thirteen thousand, one hundred twenty-eight".