1128278163850 has 24 divisors (see below), whose sum is σ = 2098657061280. Its totient is φ = 451298431920.

The previous prime is 1128278163763. The next prime is 1128278163851. The reversal of 1128278163850 is 583618728211.

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1128278163851) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 1564779 + ... + 2169121.

It is an arithmetic number, because the mean of its divisors is an integer number (87444044220).

Almost surely, 2^{1128278163850} is an apocalyptic number.

1128278163850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1128278163850 is a deficient number, since it is larger than the sum of its proper divisors (970378897430).

1128278163850 is a wasteful number, since it uses less digits than its factorization.

1128278163850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641694 (or 641689 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 52.

The spelling of 1128278163850 in words is "one trillion, one hundred twenty-eight billion, two hundred seventy-eight million, one hundred sixty-three thousand, eight hundred fifty".