1066774859999 has 4 divisors (see below), whose sum is σ = 1084262972520. Its totient is φ = 1049286747480.

The previous prime is 1066774859977. The next prime is 1066774860013. The reversal of 1066774859999 is 9999584776601.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1066774859999 is a prime.

It is a super-2 number, since 2×1066774859999² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066774859299) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8744056169 + ... + 8744056290.

It is an arithmetic number, because the mean of its divisors is an integer number (271065743130).

Almost surely, 2^{1066774859999} is an apocalyptic number.

1066774859999 is a deficient number, since it is larger than the sum of its proper divisors (17488112521).

1066774859999 is an equidigital number, since it uses as much as digits as its factorization.

1066774859999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17488112520.

The product of its (nonzero) digits is 1851776640, while the sum is 80.

The spelling of 1066774859999 in words is "one trillion, sixty-six billion, seven hundred seventy-four million, eight hundred fifty-nine thousand, nine hundred ninety-nine".