1128128380050 has 48 divisors (see below), whose sum is σ = 3197438154432. Its totient is φ = 257857915200.

The previous prime is 1128128380037. The next prime is 1128128380109. The reversal of 1128128380050 is 500838218211.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1128128379990 and 1128128380008.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 537202941 + ... + 537205040.

It is an arithmetic number, because the mean of its divisors is an integer number (66613294884).

Almost surely, 2^{1128128380050} is an apocalyptic number.

1128128380050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1128128380050 is an abundant number, since it is smaller than the sum of its proper divisors (2069309774382).

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

1128128380050 is a wasteful number, since it uses less digits than its factorization.

1128128380050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1074408003 (or 1074407998 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 39.

The spelling of 1128128380050 in words is "one trillion, one hundred twenty-eight billion, one hundred twenty-eight million, three hundred eighty thousand, fifty".