123466828789 has 2 divisors, whose sum is σ = 123466828790. Its totient is φ = 123466828788.

The previous prime is 123466828721. The next prime is 123466828819. The reversal of 123466828789 is 987828664321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 108482620689 + 14984208100 = 329367^2 + 122410^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123466828789 is a prime.

It is a super-2 number, since 2×123466828789² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 123466828789.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123464828789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61733414394 + 61733414395.

It is an arithmetic number, because the mean of its divisors is an integer number (61733414395).

Almost surely, 2^123466828789 is an apocalyptic number.

It is an amenable number.

123466828789 is a deficient number, since it is larger than the sum of its proper divisors (1).

123466828789 is an equidigital number, since it uses as much as digits as its factorization.

123466828789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 55738368, while the sum is 64.

The spelling of 123466828789 in words is "one hundred twenty-three billion, four hundred sixty-six million, eight hundred twenty-eight thousand, seven hundred eighty-nine".