1123466666689 has 2 divisors, whose sum is σ = 1123466666690. Its totient is φ = 1123466666688.

The previous prime is 1123466666633. The next prime is 1123466666711. The reversal of 1123466666689 is 9866666643211.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1086066201025 + 37400465664 = 1042145^2 + 193392^2 .

It is a cyclic number.

It is not a de Polignac number, because 1123466666689 - 2¹¹ = 1123466664641 is a prime.

It is a super-2 number, since 2×1123466666689² (a number of 25 digits) contains 22 as substring.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 1123466666689.

It is not a weakly prime, because it can be changed into another prime (1123466666629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561733333344 + 561733333345.

It is an arithmetic number, because the mean of its divisors is an integer number (561733333345).

Almost surely, 2^{1123466666689} is an apocalyptic number.

It is an amenable number.

1123466666689 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123466666689 is an equidigital number, since it uses as much as digits as its factorization.

1123466666689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80621568, while the sum is 64.

The spelling of 1123466666689 in words is "one trillion, one hundred twenty-three billion, four hundred sixty-six million, six hundred sixty-six thousand, six hundred eighty-nine".