1128600727885 has 8 divisors (see below), whose sum is σ = 1361195599896. Its totient is φ = 898297431360.

The previous prime is 1128600727879. The next prime is 1128600727889. The reversal of 1128600727885 is 5887270068211.

It can be written as a sum of positive squares in 4 ways, for example, as 529732141929 + 598868585956 = 727827^2 + 773866^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1128600727885 - 2¹⁹ = 1128600203597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1128600727889) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 572892786 + ... + 572894755.

It is an arithmetic number, because the mean of its divisors is an integer number (170149449987).

Almost surely, 2^{1128600727885} is an apocalyptic number.

It is an amenable number.

1128600727885 is a deficient number, since it is larger than the sum of its proper divisors (232594872011).

1128600727885 is a wasteful number, since it uses less digits than its factorization.

1128600727885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1145787743.

The product of its (nonzero) digits is 3010560, while the sum is 55.

The spelling of 1128600727885 in words is "one trillion, one hundred twenty-eight billion, six hundred million, seven hundred twenty-seven thousand, eight hundred eighty-five".