1123005575666 has 16 divisors (see below), whose sum is σ = 1909564137600. Its totient is φ = 491030777808.

The previous prime is 1123005575663. The next prime is 1123005575719. The reversal of 1123005575666 is 6665755003211.

It is a super-2 number, since 2×1123005575666² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1123005575666.

It is not an unprimeable number, because it can be changed into a prime (1123005575663) 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, 1136644826 + ... + 1136645813.

It is an arithmetic number, because the mean of its divisors is an integer number (119347758600).

Almost surely, 2^{1123005575666} is an apocalyptic number.

1123005575666 is a deficient number, since it is larger than the sum of its proper divisors (786558561934).

1123005575666 is a wasteful number, since it uses less digits than its factorization.

1123005575666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2273290673.

The product of its (nonzero) digits is 1134000, while the sum is 47.

The spelling of 1123005575666 in words is "one trillion, one hundred twenty-three billion, five million, five hundred seventy-five thousand, six hundred sixty-six".