1066866908481 has 20 divisors (see below), whose sum is σ = 1738597926384. Its totient is φ = 646586004600.

The previous prime is 1066866908479. The next prime is 1066866908501. The reversal of 1066866908481 is 1848096686601.

1066866908481 is a `hidden beast` number, since 1 + 0 + 6 + 6 + 8 + 66 + 90 + 8 + 481 = 666.

It is not a de Polignac number, because 1066866908481 - 2¹ = 1066866908479 is a prime.

It is a super-2 number, since 2×1066866908481² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1066866908441) 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 19 ways as a sum of consecutive naturals, for example, 598689855 + ... + 598691636.

Almost surely, 2^{1066866908481} is an apocalyptic number.

1066866908481 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1066866908481 is a deficient number, since it is larger than the sum of its proper divisors (671731017903).

1066866908481 is a wasteful number, since it uses less digits than its factorization.

1066866908481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1197381514 (or 1197381505 counting only the distinct ones).

The product of its (nonzero) digits is 23887872, while the sum is 63.

The spelling of 1066866908481 in words is "one trillion, sixty-six billion, eight hundred sixty-six million, nine hundred eight thousand, four hundred eighty-one".