1128605388885 has 48 divisors (see below), whose sum is σ = 2108404771200. Its totient is φ = 555179432832.

The previous prime is 1128605388853. The next prime is 1128605388931. The reversal of 1128605388885 is 5888835068211.

1128605388885 is a `hidden beast` number, since 1 + 12 + 8 + 6 + 0 + 538 + 8 + 8 + 85 = 666.

It is not a de Polignac number, because 1128605388885 - 2⁵ = 1128605388853 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 29665 + ... + 1502694.

It is an arithmetic number, because the mean of its divisors is an integer number (43925099400).

Almost surely, 2^{1128605388885} is an apocalyptic number.

1128605388885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1128605388885 is a deficient number, since it is larger than the sum of its proper divisors (979799382315).

1128605388885 is a wasteful number, since it uses less digits than its factorization.

1128605388885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1533642 (or 1533639 counting only the distinct ones).

The product of its (nonzero) digits is 29491200, while the sum is 63.

The spelling of 1128605388885 in words is "one trillion, one hundred twenty-eight billion, six hundred five million, three hundred eighty-eight thousand, eight hundred eighty-five".