1128509545800 has 384 divisors, whose sum is σ = 4397318553600. Its totient is φ = 233036559360.

The previous prime is 1128509545777. The next prime is 1128509545841. The reversal of 1128509545800 is 85459058211.

It is a self number, because there is not a number n which added to its sum of digits gives 1128509545800.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2346321 + ... + 2786079.

It is an arithmetic number, because the mean of its divisors is an integer number (11451350400).

Almost surely, 2^{1128509545800} is an apocalyptic number.

1128509545800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1128509545800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2198659276800).

1128509545800 is an abundant number, since it is smaller than the sum of its proper divisors (3268809007800).

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

1128509545800 is a wasteful number, since it uses less digits than its factorization.

1128509545800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439845 (or 439836 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 48.

The spelling of 1128509545800 in words is "one trillion, one hundred twenty-eight billion, five hundred nine million, five hundred forty-five thousand, eight hundred".