1123445567779 has 2 divisors, whose sum is σ = 1123445567780. Its totient is φ = 1123445567778.

The previous prime is 1123445567771. The next prime is 1123445567791. The reversal of 1123445567779 is 9777655443211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1123445567779 - 2³ = 1123445567771 is a prime.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (1123445567771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561722783889 + 561722783890.

It is an arithmetic number, because the mean of its divisors is an integer number (561722783890).

Almost surely, 2^{1123445567779} is an apocalyptic number.

1123445567779 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123445567779 is an equidigital number, since it uses as much as digits as its factorization.

1123445567779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 44452800, while the sum is 61.

The spelling of 1123445567779 in words is "one trillion, one hundred twenty-three billion, four hundred forty-five million, five hundred sixty-seven thousand, seven hundred seventy-nine".