1040866466805 has 36 divisors (see below), whose sum is σ = 1983094358700. Its totient is φ = 504662526720.

The previous prime is 1040866466797. The next prime is 1040866466807. The reversal of 1040866466805 is 5086646680401.

1040866466805 is a `hidden beast` number, since 1 + 0 + 40 + 8 + 66 + 466 + 80 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 104630253156 + 936236213649 = 323466^2 + 967593^2 .

It is not a de Polignac number, because 1040866466805 - 2³ = 1040866466797 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1040866466807) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 95574580 + ... + 95585469.

Almost surely, 2^{1040866466805} is an apocalyptic number.

1040866466805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1040866466805 is a deficient number, since it is larger than the sum of its proper divisors (942227891895).

1040866466805 is a wasteful number, since it uses less digits than its factorization.

1040866466805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191160082 (or 191160068 counting only the distinct ones).

The product of its (nonzero) digits is 6635520, while the sum is 54.

The spelling of 1040866466805 in words is "one trillion, forty billion, eight hundred sixty-six million, four hundred sixty-six thousand, eight hundred five".