1066128070785 has 16 divisors (see below), whose sum is σ = 1709066503104. Its totient is φ = 567514441152.

The previous prime is 1066128070741. The next prime is 1066128070789. The reversal of 1066128070785 is 5870708216601.

It is a happy number.

It is not a de Polignac number, because 1066128070785 - 2²⁰ = 1066127022209 is a prime.

It is a super-2 number, since 2×1066128070785² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1066128070789) 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 15 ways as a sum of consecutive naturals, for example, 67941682 + ... + 67957371.

It is an arithmetic number, because the mean of its divisors is an integer number (106816656444).

Almost surely, 2^{1066128070785} is an apocalyptic number.

1066128070785 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1066128070785 is a deficient number, since it is larger than the sum of its proper divisors (642938432319).

1066128070785 is a wasteful number, since it uses less digits than its factorization.

1066128070785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135899584.

The product of its (nonzero) digits is 1128960, while the sum is 51.

The spelling of 1066128070785 in words is "one trillion, sixty-six billion, one hundred twenty-eight million, seventy thousand, seven hundred eighty-five".